数字通信中一种快速盲序列估计方法

Conference Record of the Thirty-First Asilomar Conference on Signals, Systems and Computers (Cat. No.97CB36136) Pub Date : 1997-11-02 DOI:10.1109/ACSSC.1997.680560

M. Torlak, L. Hansen, G. Xu

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引用次数: 2

摘要

研究了在多径衰落情况下，利用天线阵列对多个数字同信道通信信号进行盲估计的问题。基于Hansen和Xu的几何观测，我们开发了一种用于分离多用户信号的快速序列估计算法(参见Proc. ICASSP'96, p.1085-88, Atlanta, GA, 1996)。当信号被限制为有限字母时，可以可视化问题的几何性质，可以利用它来顺序提取数字同信道通信信号。仿真结果比较了不同方法的速度和误码率。

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A fast blind sequence estimation in digital communications

The problem of blindly estimating multiple digital co-channel communication signals using an antenna array is studied in the presence of multipath fading. We develop a fast sequential-estimation algorithm for separating multi-user signals based on the geometric observation made by Hansen and Xu (see Proc. ICASSP'96, p.1085-88, Atlanta, GA, 1996). When the signals are constrained to a finite alphabet, it is possible to visualize the geometric properties of the problem, which can be exploited to sequentially extract the digital co-channel communication signals. We present simulation results comparing the speed and BER performance with different methods.

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Conference Record of the Thirty-First Asilomar Conference on Signals, Systems and Computers (Cat. No.97CB36136)

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