Multistage multiuser detection for FHMA
Multistage multiuser detection for FHMA
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DOI：
10.1109/26.870022
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发表时间：
2000-09
期刊：
影响因子：
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通讯作者：
K. Halford;M. Brandt-Pearce
中科院分区：
文献类型：
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作者：
K. Halford;M. Brandt-Pearce
提出了一种适用于跳频/码分多址系统的多级多用户检测器。MMD通过利用用户信号的地址和能量的先验知识，降低了传统检测器的误码率（BER）。该检测器是一个保守的多用户检测器，它对未知用户具有鲁棒性，并且其复杂度仅与用户数成线性关系。同步MMD的性能分析包括无噪声情况下的理论和仿真BER以及包括噪声存在的仿真结果。然后，MMD扩展到完全异步的情况下，这使得这项工作的第一个提出一个FH/CDMA多用户检测器的异步通信。这种异步MMD通过仿真与传统的检测器进行比较。
A multistage multiuser detector (MMD) is presented for frequency-hopping/code-division multiple access (FH/CDMA.) The MMD reduces the bit-error rate (BER) over the conventional detector by exploiting prior knowledge of the addresses and energies of the user signals. This detector is a conservative multiuser detector which is robust to unknown users and has a complexity that is only linear in the number of users. The performance analysis of the synchronous MMD includes both theoretical and simulation BERs for the noiseless case as well as simulation results that include the presence of noise. The MMD is then extended to the fully asynchronous case which makes this work the first to propose an FH/CDMA multiuser detector for asynchronous communications. This asynchronous MMD is compared via simulation to the conventional detector.