Finite-sample performance analysis of widely linear multiuser receivers for DS-CDMA systems

被引：15
|
作者：
Cacciapuoti, Angela Sara [1 ]
Gelli, Giacinto [1 ]
Paura, Luigi [1 ]
Verde, Francesco [1 ]
机构：
[1] Univ Naples Federico II, Dipartimento Ingn Elettron & Telecomunicaz, I-80125 Naples, Italy
来源：
IEEE TRANSACTIONS ON SIGNAL PROCESSING | 2008年 / 56卷 / 04期
关键词：
direct-sequence code-division multiple-access (DS-CDMA) systems; linear and widely linear receiving techniques; multiuser detection; performance analysis; proper and improper random processes;
D O I：
10.1109/TSP.2007.908937
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper tackles the theoretical performance analysis of widely linear (WL) multiuser receivers for direct-sequence code-division multiple-access (DS-CDMA) systems, as well as their comparison with conventional linear (L) ones. In particular, receivers based on the minimum output-energy (MOE) criterion are considered, since they offer a good tradeoff between performance and complexity and, moreover, lend to some simplifications in the analysis. After comparing the ideal signal-to-interference-plus-noise-ratio (SINR) performances of the WL-MOE and L-MOE receivers, the paper establishes finite-sample performance results for two typical data-estimated implementations. Specifically, by adopting a first-order perturbative approach, the SINR degradation of the data-estimated WL-MOE receivers is accurately evaluated and compared with that of its linear counterpart. Simulation results are provided to validate and complement the theoretical analysis.
引用
收藏
页码：1572 / 1588
页数：17
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