Improved cochannel interference cancellation for MFSK/FH-SSMA systems
Improved cochannel interference cancellation for MFSK/FH-SSMA systems
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DOI：
10.1109/49.806823
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发表时间：
1999-11
期刊：
影响因子：
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通讯作者：
Shang-Yao Lin;Guu-chang Yang;Shih-Chin Tseng;Chi-Fu Hong
中科院分区：
文献类型：
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作者：
Shang-Yao Lin;Guu-chang Yang;Shih-Chin Tseng;Chi-Fu Hong
由于跳频扩频多址（FH-SSMA）的频率分集和对远近问题的抵抗力，人们对无线系统的应用产生了很大的兴趣。在FH-SSMA系统中，同信道干扰（CCI）是限制用户容量的主要因素。用于解决 CCI 问题的各种技术已被广泛研究。我们提出了几种基于取消 CCI 的多用户检测方案，以增加多级频移键控 (MFSK)/FH-SSMA 系统中的用户容量。分析了采用所提出的干扰消除器的系统在瑞利衰落信道上的性能，并与传统和其他干扰消除器的系统性能进行了比较。我们的结果表明，所提出的方案在非衰落和衰落信道中均具有最佳性能。
There has been much interest in the application of frequency hopping-spread spectrum multiple access (FH-SSMA) to wireless systems because of its frequency diversity and resistance to the near-far problem. In FH-SSMA systems, cochannel interference (CCI) is the dominant factor limiting the user capacity. Various techniques used to resolve the CCI problem have been extensively investigated. We propose several multiuser detection schemes based on canceling CCI to increase user capacity in a multilevel frequency shift keying (MFSK)/FH-SSMA system. The performance of systems with the proposed interference cancellers over a Rayleigh fading channel are analyzed and compared with those of the conventional and other interference cancellers. Our results show that the proposed schemes have the best performance in both nonfading and fading channels.