一种新的基于水声信道双模盲均衡算法

提出一种蜂窝型（非正方形）16APK调制算法和新的基于蜂窝型判决区域的双模式盲均衡算法（DHDRA）. 对典型的浅海水声信道进行的仿真结果表明，基于蜂窝型16APK的调制算法比基于正方形16QAM的常数模盲均衡算法（CMA）更具抗干扰能力，收敛速度更快；基于蜂窝型判决区域的双模式盲均衡算法在收敛速度和稳态误差方面均优于基于正方形环判决区域的双模式算法，对于提高水下通信质量，降低码间干扰具有一定的研究价值.

A New Dual-Mode Blind Equalization Algorithm in Underwater Acoustic Channel

A honeycomb (non square) 16 amplitude phase keying (APK) modulation is proposed. A new dual mode based on honeycomb decision region algorithm (DHDRA) is provided. The proposed algorithm is simulated using a typical shallow underwater acoustic channel. Simulation shows that, more anti interference and faster convergence are achieved with the constant modulus algorithm (CMA) based on the honeycomb 16APK than that with the square 16QAM, meanwhile. Also, higher convergence speeds and less steady residual errors are got with the proposed dual mode algorithm than the that with the squared decision region algorithm. They have the research value for improving the underwater communication qualities and decreasing the inter symbol interference.