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Advances in 3G enhanced technologies for wireless communications / / Jiangzhou Wang, Tung-Sang Ng, editors
| Advances in 3G enhanced technologies for wireless communications / / Jiangzhou Wang, Tung-Sang Ng, editors |
| Pubbl/distr/stampa | Boston : , : Artech House, , ©2002 |
| Descrizione fisica | 1 online resource (366 p.) |
| Disciplina | 621.382 |
| Altri autori (Persone) |
WangJiangzhou
NgTung-Sang |
| Collana | Artech House mobile communications series |
| Soggetto topico |
Wireless communication systems - Technological innovations
Telecommunication systems |
| Soggetto genere / forma | Electronic books. |
| ISBN |
9781580535550
1-58053-555-0 |
| Formato | Materiale a stampa  |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Nota di contenuto | WCDMA Enhanced Technologies -- Physical Channel and Spreading Code Assignment -- Physical Channel -- Spreading Code Assignment -- Transport Channel Multiplexing -- Explanation of Data Format for Layer 1 -- Transport Channel -- Multiplexing and Rate Matching -- Asynchronous Cell Sites and Synchronization -- Synchronization in UTRAN -- Cell Search -- Random Access -- SIR Measurement-Based Fast TPC -- Diversity -- Coherent RAKE Combining (RAKE Time Diversity) -- Site Diversity (Soft/Softer Handover) -- Transmit Diversity -- WCDMA Capacity Enhanced Technologies -- Coherent Adaptive Antenna Array Diversity Receiver/Adaptive Antenna Array Transmit Diversity -- Experiments -- Downlink Performance Enhancements in CDMA Cellular Systems -- Evaluation of WCDMA Downlinks -- Assumptions in System Evaluation -- Downlink Capacities of WCDMA -- Impact of SHO Window Threshold on Downlink Capacity -- Optimum Orthogonal Code Allocation in CDMA Downlinks -- Site Selection Diversity TPC -- Detailed Operation -- Simulation Conditions for Evaluation of Performance -- Codeword Set -- Performance -- Performance in Combination with Transmission Diversities -- Summary and Subjects for Future Study -- GSM/EDGE Radio Access Network: Evolution of GSM/EDGE Toward 3G Mobile Services -- 3G Mobile Services -- Architecture -- BSS External Interfaces -- Modes of Operation -- Protocol Architectures -- Radio Interface Protocols -- RRC Protocol -- PDCP -- RLC -- MAC -- GERAN Physical Layer -- Services -- From GSM/EDGE to GERAN -- Physical Resource. |
| Record Nr. | UNINA-9910455779403321 |
| Boston : , : Artech House, , ©2002 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
| ||
Advances in 3G enhanced technologies for wireless communications / / Jiangzhou Wang, Tung-Sang Ng, editors
| Advances in 3G enhanced technologies for wireless communications / / Jiangzhou Wang, Tung-Sang Ng, editors |
| Pubbl/distr/stampa | Boston : , : Artech House, , ©2002 |
| Descrizione fisica | 1 online resource (366 p.) |
| Disciplina | 621.382 |
| Altri autori (Persone) |
WangJiangzhou
NgTung-Sang |
| Collana | Artech House mobile communications series |
| Soggetto topico |
Wireless communication systems - Technological innovations
Telecommunication systems |
| ISBN |
9781580535550
1-58053-555-0 |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Nota di contenuto | WCDMA Enhanced Technologies -- Physical Channel and Spreading Code Assignment -- Physical Channel -- Spreading Code Assignment -- Transport Channel Multiplexing -- Explanation of Data Format for Layer 1 -- Transport Channel -- Multiplexing and Rate Matching -- Asynchronous Cell Sites and Synchronization -- Synchronization in UTRAN -- Cell Search -- Random Access -- SIR Measurement-Based Fast TPC -- Diversity -- Coherent RAKE Combining (RAKE Time Diversity) -- Site Diversity (Soft/Softer Handover) -- Transmit Diversity -- WCDMA Capacity Enhanced Technologies -- Coherent Adaptive Antenna Array Diversity Receiver/Adaptive Antenna Array Transmit Diversity -- Experiments -- Downlink Performance Enhancements in CDMA Cellular Systems -- Evaluation of WCDMA Downlinks -- Assumptions in System Evaluation -- Downlink Capacities of WCDMA -- Impact of SHO Window Threshold on Downlink Capacity -- Optimum Orthogonal Code Allocation in CDMA Downlinks -- Site Selection Diversity TPC -- Detailed Operation -- Simulation Conditions for Evaluation of Performance -- Codeword Set -- Performance -- Performance in Combination with Transmission Diversities -- Summary and Subjects for Future Study -- GSM/EDGE Radio Access Network: Evolution of GSM/EDGE Toward 3G Mobile Services -- 3G Mobile Services -- Architecture -- BSS External Interfaces -- Modes of Operation -- Protocol Architectures -- Radio Interface Protocols -- RRC Protocol -- PDCP -- RLC -- MAC -- GERAN Physical Layer -- Services -- From GSM/EDGE to GERAN -- Physical Resource. |
| Record Nr. | UNINA-9910780161303321 |
| Boston : , : Artech House, , ©2002 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
| ||
Distributed MIMO and cell-free mobile communication / / Xiaohu You, Dongming Wang, Jiangzhou Wang
| Distributed MIMO and cell-free mobile communication / / Xiaohu You, Dongming Wang, Jiangzhou Wang |
| Autore | You Xiaohu |
| Edizione | [1st ed. 2021.] |
| Pubbl/distr/stampa | Singapore : , : Springer |
| Descrizione fisica | 1 online resource (XIII, 220 p. 108 illus., 95 illus. in color.) |
| Disciplina | 621.38456 |
| Soggetto topico |
Mobile communication systems - Computer programs
MIMO systems - Computer programs |
| ISBN | 981-15-9845-2 |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Nota di contenuto | Fundamentals of Distributed MIMO and Cell-free Mobile Communications -- Analysis of the Channel Capacity of Distributed MIMO -- Massive Distributed MIMO and Cell-free Systems Under Pilot Contamination -- Cell Edge Effect and Its Elimination with a Cell-free System -- Transmit Power Allocation and Energy Efficiency Optimization of Distributed MIMO -- Caching Optimization in Distributed MIMO Systems -- Low-complexity Transmission Technologies for D-MIMO -- Massive Distributed MIMO and Cell-free Network-assisted Full Duplex -- Proof of Concept and Validation: Implementation Based on a Cloud Architecture. |
| Record Nr. | UNINA-9910483623303321 |
You Xiaohu
|
||
| Singapore : , : Springer | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
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Intelligent Reflecting Surface-Aided Physical-Layer Security [[electronic resource] /] / by Feng Shu, Jiangzhou Wang
| Intelligent Reflecting Surface-Aided Physical-Layer Security [[electronic resource] /] / by Feng Shu, Jiangzhou Wang |
| Autore | Shu Feng |
| Edizione | [1st ed. 2023.] |
| Pubbl/distr/stampa | Cham : , : Springer Nature Switzerland : , : Imprint : Springer, , 2023 |
| Descrizione fisica | 1 online resource (250 pages) |
| Disciplina | 004.6 |
| Altri autori (Persone) | WangJiangzhou |
| Collana | Wireless Networks |
| Soggetto topico |
Computer networks
Wireless communication systems Mobile communication systems Computer networks - Security measures Telecommunication Computer Communication Networks Wireless and Mobile Communication Mobile and Network Security Communications Engineering, Networks |
| ISBN | 3-031-41812-3 |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Nota di contenuto | Contents 1 Intelligent Reflecting Surface-aided Physical-layer Security Communications -- 1.1 Overview of Physical-layer Security -- 1.2 Overview of Intelligent Reflecting Surface -- 1.3 Organization of the Monograph -- References -- 2 Enhanced Secrecy Rate Maximization for Directional Modulation Networks via IRS -- 2.1 Introduction -- 2.2 System Model -- 2.3 Proposed high-performance GAI-based Max-SR method -- 2.3.1 Optimize the beamforming vectors v1 and v2 given the IRS phase-shift matrix ���� -- 2.3.2 Optimize IRS phase-shift matrix ���� given the beamforming vectors -- 2.3.3 Overall Algorithm -- 2.4 Proposed low-complexity NSP-based Max-SR method -- 2.4.1 Optimization of beamforming vectors given IRS phase-shift matrix ���� -- 2.4.2 Optimization of IRS phase-shift matrix ���� with given beamforming vectors -- 2.4.3 Overall Algorithm -- 2.5 Simulation and Discussion -- 2.5.1 Impact of the Number of IRS Phase-shift -- 2.5.2 Impact of the IRS Location -- 2.6 Conclusion. -- References -- Contents 3 High-performance Estimation of Jamming Covariance Matrix for IRS-aided Directional Modulation Network with a Malicious Attacker -- 3.1 Introduction -- 3.2 System Model -- 3.3 Proposed Three Estimation Methods -- 3.3.1 Proposed EVD method -- 3.3.2 Proposed PEM-GD method -- 3.3.3 Proposed PEM-AO method -- 3.3.4 Computational Complexity Analysis and CRLBs -- 3.4 Simulation results and Discussions -- 3.5 Conclusion -- References -- 4 Beamforming and Power Allocation for Double-IRS-aided Two-Way Directional Modulation Network -- 4.1 Introduction -- 4.2 System Model and Problem Formulation -- 4.3 Proposed Transmit Beamforming Methods -- 4.3.1 Proposed GPG Method of Synthesizing the Phase-Shifting Matrices at Two IRSs -- 4.3.2 Proposed Max-SV Method -- 4.3.3 Generalized leakage method 4.4 Proposed HICF Power Allocation Strategy -- 4.4.1 Problem formulation -- 4.4.2 2D-ES and 1D-ES PA strategies -- 4.4.3 Proposed HICF PA strategy -- 4.5 Simulation Results and Discussions -- 4.6 Conclusion -- 4.7 Appendix -- References -- 5 Beamforming and Transmit Power Design for Intelligent Reconfigurable Surface-aided Secure Spatial Modulation -- 5.1 Introduction -- 5.2 System Model -- 5.2.1 IRS-Aided Secure Spatial Modulation System -- 5.2.2 Problem Formulation -- 5.3 Approximation of the Ergodic Mutual Information -- 5.3.1 Traditional Approximate Secrecy Rate Expression -- 5.3.2 Proposed Newly Approximate Secrecy Rate Expression -- 5.4 Beamforming Design for given transmit power based on Approximate expression of SR -- 5.4.1 Proposed Max-NASR-SCA -- 5.4.2 Proposed Max-NASR-DA -- 5.4.3 Proposed Max-TASR-SDR method -- 5.5 Transmit Power Design for Given Beamforming based on Approximate Expression of SR -- 5.5.1 Transmit Power Design based on Proposed NASR -- 5.5.2 Transmit Power Design based on TASR -- 5.6 Complexity Analysis -- 5.7 Simulation Results and Analysis -- 5.7.1 Rayleigh fading channel -- 5.7.2 Rayleigh fading channel considering path loss -- 5.8 Conclusion -- References -- 6 IRS-Aided Covert Wireless Communications with Delay Constraint -- 6.1 Introduction -- 6.2 System Model -- 6.2.1 Considered Scenario and Assumptions -- 6.2.2 Binary Hypothesis Testing at Willie -- 6.2.3 Transmission from Alice to Bob -- 6.3 Covert Communication Design with Global Channel State Information -- 6.3.1 Optimization Problem and Perfect Covertness Condition -- 6.3.2 Joint Transmit Power and Reflect Beamforming Design -- 6.3.3 Low-Complexity Algorithm -- 6.4 Covert Communication Design without Willie’s instantaneous CSI -- 6.4.1 Expression for Covertness Constraint -- 6.4.2 Optimal Design without Willie’s Instantaneous CSI -- 6.5 Numerical Results -- 6.5.1 With Global CSI -- 6.5.2 Without Willie’s Instantaneous CSI -- 6.6 Conclusion -- 6.7 Appendix -- 6.7.1 Proof of Theorem 6.1 -- 6.7.2 Proof of Lemma 6.1 -- 6.7.3 Proof of Theorem 6.2 -- References -- 7 Intelligent Reflecting Surface Aided Secure Transmission with Colluding Eavesdroppers -- 7.1 Introduction -- 7.2 System Model and Problem Formulation -- 7.3 Proposed Solutions -- 7.3.1 SDR-Based Method -- 7.3.2 Proposed LC-AO Algorithm -- 7.4 Simulation Results -- 7.5 Conclusion -- References -- 8 Secure Multigroup Multicast Communication Systems via Intelligent Reflecting Surface -- 8.1 Introduction -- 8.2 System Model -- 8.3 SDR-based Alternating Optimization Method -- 8.3.1 Optimization with respect to {W����, Q} -- 8.3.2 Optimization with respect to U -- 8.3.3 Overall Algorithm and Complexity Analysis -- 8.4 Low-complexity SOCP-based Algorithm -- 8.4.1 Optimization with respect to beamforming vector and AN -- 8.4.2 Optimization with respect to phase shifts -- 8.4.3 Overall Algorithm and Complexity Analysis -- 8.5 Simulation and analysis -- 8.6 Conclusion -- References -- 9 Beamforming Design for IRS-aided Decode-and-Forward Relay Wireless Network -- 9.1 Introduction -- 9.2 System Model -- 9.3 Proposed Three High-Performance Beamforming Schemes -- 9.3.1 Proposed AIS-based Max-RP Method -- 9.3.2 Proposed NSP-based Max-RP plus MRC Method -- 9.3.3 Proposed IRSES-based Max-RP plus MRC Method -- 9.4 Numerical Results -- 9.5 Conclusion -- References -- 10 Performance Analysis of Wireless Network Aided by Discrete[1]Phase-Shifter IRS -- 10.1 Introduction. -- 10.2 System Model -- 10.3 Performance Loss Derivation and Analysis in the LoS Channels -- 10.3.1 Derivation of Performance Loss in LoS Channels -- 10.3.2 Performance Loss of SNR at Bob -- 10.3.3 Performance Loss of Achievable Rate at Bob -- 10.3.4 Performance Loss of BER at Bob -- 10.4 Performance Loss Derivation and Analysis in the Rayleigh Channels -- 10.4.1 Derivation of Performance Loss in the Rayleigh Channels -- 10.4.2 Performance Loss of SNR at Bob -- 10.4.3 Performance Loss of Achievable Rate at Bob -- 10.4.4 Performance Loss of BER at Bob -- 10.5 Simulation Results and Discussions -- 10.6 Conclusion -- References -- 11 Conclusions and Future Research Directions. |
| Record Nr. | UNISA-996558569503316 |
|
Shu Feng
|
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| Cham : , : Springer Nature Switzerland : , : Imprint : Springer, , 2023 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. di Salerno | ||
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Intelligent Reflecting Surface-Aided Physical-Layer Security / / by Feng Shu, Jiangzhou Wang
| Intelligent Reflecting Surface-Aided Physical-Layer Security / / by Feng Shu, Jiangzhou Wang |
| Autore | Shu Feng |
| Edizione | [1st ed. 2023.] |
| Pubbl/distr/stampa | Cham : , : Springer Nature Switzerland : , : Imprint : Springer, , 2023 |
| Descrizione fisica | 1 online resource (250 pages) |
| Disciplina | 004.6 |
| Altri autori (Persone) | WangJiangzhou |
| Collana | Wireless Networks |
| Soggetto topico |
Computer networks
Wireless communication systems Mobile communication systems Computer networks - Security measures Telecommunication Computer Communication Networks Wireless and Mobile Communication Mobile and Network Security Communications Engineering, Networks |
| ISBN | 3-031-41812-3 |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Nota di contenuto | Contents 1 Intelligent Reflecting Surface-aided Physical-layer Security Communications -- 1.1 Overview of Physical-layer Security -- 1.2 Overview of Intelligent Reflecting Surface -- 1.3 Organization of the Monograph -- References -- 2 Enhanced Secrecy Rate Maximization for Directional Modulation Networks via IRS -- 2.1 Introduction -- 2.2 System Model -- 2.3 Proposed high-performance GAI-based Max-SR method -- 2.3.1 Optimize the beamforming vectors v1 and v2 given the IRS phase-shift matrix ���� -- 2.3.2 Optimize IRS phase-shift matrix ���� given the beamforming vectors -- 2.3.3 Overall Algorithm -- 2.4 Proposed low-complexity NSP-based Max-SR method -- 2.4.1 Optimization of beamforming vectors given IRS phase-shift matrix ���� -- 2.4.2 Optimization of IRS phase-shift matrix ���� with given beamforming vectors -- 2.4.3 Overall Algorithm -- 2.5 Simulation and Discussion -- 2.5.1 Impact of the Number of IRS Phase-shift -- 2.5.2 Impact of the IRS Location -- 2.6 Conclusion. -- References -- Contents 3 High-performance Estimation of Jamming Covariance Matrix for IRS-aided Directional Modulation Network with a Malicious Attacker -- 3.1 Introduction -- 3.2 System Model -- 3.3 Proposed Three Estimation Methods -- 3.3.1 Proposed EVD method -- 3.3.2 Proposed PEM-GD method -- 3.3.3 Proposed PEM-AO method -- 3.3.4 Computational Complexity Analysis and CRLBs -- 3.4 Simulation results and Discussions -- 3.5 Conclusion -- References -- 4 Beamforming and Power Allocation for Double-IRS-aided Two-Way Directional Modulation Network -- 4.1 Introduction -- 4.2 System Model and Problem Formulation -- 4.3 Proposed Transmit Beamforming Methods -- 4.3.1 Proposed GPG Method of Synthesizing the Phase-Shifting Matrices at Two IRSs -- 4.3.2 Proposed Max-SV Method -- 4.3.3 Generalized leakage method 4.4 Proposed HICF Power Allocation Strategy -- 4.4.1 Problem formulation -- 4.4.2 2D-ES and 1D-ES PA strategies -- 4.4.3 Proposed HICF PA strategy -- 4.5 Simulation Results and Discussions -- 4.6 Conclusion -- 4.7 Appendix -- References -- 5 Beamforming and Transmit Power Design for Intelligent Reconfigurable Surface-aided Secure Spatial Modulation -- 5.1 Introduction -- 5.2 System Model -- 5.2.1 IRS-Aided Secure Spatial Modulation System -- 5.2.2 Problem Formulation -- 5.3 Approximation of the Ergodic Mutual Information -- 5.3.1 Traditional Approximate Secrecy Rate Expression -- 5.3.2 Proposed Newly Approximate Secrecy Rate Expression -- 5.4 Beamforming Design for given transmit power based on Approximate expression of SR -- 5.4.1 Proposed Max-NASR-SCA -- 5.4.2 Proposed Max-NASR-DA -- 5.4.3 Proposed Max-TASR-SDR method -- 5.5 Transmit Power Design for Given Beamforming based on Approximate Expression of SR -- 5.5.1 Transmit Power Design based on Proposed NASR -- 5.5.2 Transmit Power Design based on TASR -- 5.6 Complexity Analysis -- 5.7 Simulation Results and Analysis -- 5.7.1 Rayleigh fading channel -- 5.7.2 Rayleigh fading channel considering path loss -- 5.8 Conclusion -- References -- 6 IRS-Aided Covert Wireless Communications with Delay Constraint -- 6.1 Introduction -- 6.2 System Model -- 6.2.1 Considered Scenario and Assumptions -- 6.2.2 Binary Hypothesis Testing at Willie -- 6.2.3 Transmission from Alice to Bob -- 6.3 Covert Communication Design with Global Channel State Information -- 6.3.1 Optimization Problem and Perfect Covertness Condition -- 6.3.2 Joint Transmit Power and Reflect Beamforming Design -- 6.3.3 Low-Complexity Algorithm -- 6.4 Covert Communication Design without Willie’s instantaneous CSI -- 6.4.1 Expression for Covertness Constraint -- 6.4.2 Optimal Design without Willie’s Instantaneous CSI -- 6.5 Numerical Results -- 6.5.1 With Global CSI -- 6.5.2 Without Willie’s Instantaneous CSI -- 6.6 Conclusion -- 6.7 Appendix -- 6.7.1 Proof of Theorem 6.1 -- 6.7.2 Proof of Lemma 6.1 -- 6.7.3 Proof of Theorem 6.2 -- References -- 7 Intelligent Reflecting Surface Aided Secure Transmission with Colluding Eavesdroppers -- 7.1 Introduction -- 7.2 System Model and Problem Formulation -- 7.3 Proposed Solutions -- 7.3.1 SDR-Based Method -- 7.3.2 Proposed LC-AO Algorithm -- 7.4 Simulation Results -- 7.5 Conclusion -- References -- 8 Secure Multigroup Multicast Communication Systems via Intelligent Reflecting Surface -- 8.1 Introduction -- 8.2 System Model -- 8.3 SDR-based Alternating Optimization Method -- 8.3.1 Optimization with respect to {W����, Q} -- 8.3.2 Optimization with respect to U -- 8.3.3 Overall Algorithm and Complexity Analysis -- 8.4 Low-complexity SOCP-based Algorithm -- 8.4.1 Optimization with respect to beamforming vector and AN -- 8.4.2 Optimization with respect to phase shifts -- 8.4.3 Overall Algorithm and Complexity Analysis -- 8.5 Simulation and analysis -- 8.6 Conclusion -- References -- 9 Beamforming Design for IRS-aided Decode-and-Forward Relay Wireless Network -- 9.1 Introduction -- 9.2 System Model -- 9.3 Proposed Three High-Performance Beamforming Schemes -- 9.3.1 Proposed AIS-based Max-RP Method -- 9.3.2 Proposed NSP-based Max-RP plus MRC Method -- 9.3.3 Proposed IRSES-based Max-RP plus MRC Method -- 9.4 Numerical Results -- 9.5 Conclusion -- References -- 10 Performance Analysis of Wireless Network Aided by Discrete[1]Phase-Shifter IRS -- 10.1 Introduction. -- 10.2 System Model -- 10.3 Performance Loss Derivation and Analysis in the LoS Channels -- 10.3.1 Derivation of Performance Loss in LoS Channels -- 10.3.2 Performance Loss of SNR at Bob -- 10.3.3 Performance Loss of Achievable Rate at Bob -- 10.3.4 Performance Loss of BER at Bob -- 10.4 Performance Loss Derivation and Analysis in the Rayleigh Channels -- 10.4.1 Derivation of Performance Loss in the Rayleigh Channels -- 10.4.2 Performance Loss of SNR at Bob -- 10.4.3 Performance Loss of Achievable Rate at Bob -- 10.4.4 Performance Loss of BER at Bob -- 10.5 Simulation Results and Discussions -- 10.6 Conclusion -- References -- 11 Conclusions and Future Research Directions. |
| Record Nr. | UNINA-9910751387403321 |
|
Shu Feng
|
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| Cham : , : Springer Nature Switzerland : , : Imprint : Springer, , 2023 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
| ||