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An Effective Cancellation Technique of Cochannel Interference Based on Multiuser Detection Scheme for MFSK/FH-SSMA Systems

机译:基于多用户检测方案的MFSK / FH-SSMA系统同频干扰有效消除技术

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摘要

The performance of a multilevel frequency shift keying/frequency hopping-spread spectrum multiple access (MFSK/FH-SSMA) system over a cochannel interference scenario is dependent on multiuser detection schemes. Many investigations have demonstrated huge potential capacity and performance improvement by using multiuser detection schemes. However, their schemes are extremely complex while the total number of users is increased because the multiuser interference becomes larger. In this paper, we propose a novel multiuser detection scheme to reduce the complexity of decoding process. The performance of the system with the proposed scheme over a nonfading channel is simulated and compared with that of conventional and other multiuser interference cancellers. Simulation results show that the proposed scheme reduces the system complexity and improves the bit error rate (BER).
机译:在同信道干扰情况下的多级频移键控/跳频扩频多址(MFSK / FH-SSMA)系统的性能取决于多用户检测方案。许多研究表明,通过使用多用户检测方案,可以极大地提高容量和性能。但是,由于多用户干扰变大,所以在增加用户总数的同时,它们的方案极其复杂。在本文中,我们提出了一种新颖的多用户检测方案,以减少解码过程的复杂性。模拟了具有拟议方案的系统在无衰落信道上的性能,并将其与常规和其他多用户干扰消除器进行了比较。仿真结果表明,该方案降低了系统复杂度,提高了误码率(BER)。

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