一种半盲异步快跳频多址系统多用户检测算法
doi: 10.3724/SP.J.1146.2005.01499
A Semi-blind Multiuser Detection Algorithm of Asynchronous Fast-FHMA
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摘要: 针对异步用户到达时间的差异性，以及期望用户信号的一致性，该文提出了基于最大行的均方误差(MSE)判决准则的半盲异步跳频多址多用户检测算法。利用期望用户时频矩阵具有最大行和最小均方偏差的特点实现检测目的。算法可以在未知干扰用户地址时实现盲检测，或利用部分干扰用户地址信息通过迭代提高检测性能。仿真结果表明提出的算法具有较好的性能和较低的复杂度，较强的抗虚警和漏检能力。
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关键词:
- 半盲;异步;频跳多址通信;多用户检测
Abstract: A based-MSE semi-blind multiuser detection algorithm of asynchronous fast-frequency hopping multiply access communication system is proposed, which exploit the difference of arrive time of asynchronous user and coordinate of signal energy of desired user. The detector implement decision through distinguish most energy row and the minimum Mean Square Error of decode T-F matrix. The algorithm can blind detect without other interference user address, or semi-blind detect utilize some known user address and improve performance of system. Simulation results show that proposed detector has better performance and lower complication, and strong capability of resistant false alarm and deletion. -
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