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在无线通信系统中,码间干扰(ISI)是影响通信质量的重要因素。盲均衡技术不需要发送导频序列便能自适应调节均衡器抽头系数,能够有效去除ISI。文中介绍了盲均衡技术原理,重点研究了恒模类盲均衡算法,通过对恒模算法(CMA)和改进的CMA算法(包括MMA算法和双模式盲均衡算法)的迭代公式分析,得出了恒模类盲均衡算法的性能。计算机仿真表明恒模类盲均衡算法在无线通信中具有良好的均衡性能。
In wireless communication systems, intersymbol interference (ISI) is an important factor affecting the quality of communication. Blind equalization technology can adaptively adjust the equalizer tap coefficients without sending pilot sequences, effectively removing ISI. In this paper, the principle of blind equalization technique is introduced, and the constant modulus blind equalization algorithm is studied emphatically. By analyzing the iterative formula of constant modulus algorithm (CMA) and improved CMA algorithm (including MMA algorithm and dual mode blind equalization algorithm) Performance of Constant Modulus Blind Equalization Algorithm. Computer simulation shows that the constant modulus blind equalization algorithm has good balance performance in wireless communication.