关键词: 非合作通信, 盲均衡, 分数间隔, 数据重用, 变步长

Abstract: A new blind equalization algorithm is proposed for short message detection and reception in non-cooperative communication. Based on the T/4 fractionally-spaced constant modulus algorithm（T/4-FSE-CMA）, the new algorithm introduces data reuse method and variable step size idea. Data reusing can sharply reduce the number of symbol that need to converge. Variable step size can further improve the accuracy of the algorithm. Simulation results show, compared with T/4-FSE-CMA and Data Reuse CMA（DR-CMA）, the new algorithm has faster convergence speed and higher steady-state accuracy, as well as a lower BER. The new algorithm has great engineering application value.

Key words: non-cooperative communication, blind equalization, fractionally-spaced, data reuse, variable step size