具有自适应均衡的QPSK基带处理联合解调器

Associated Baseband Processing Demodulator for QPSK System with Adaptive Equalization

本文提出了一种具有自适应均衡调节,载波相位及符号定时恢复联合控制的解调器方案.由于在解调器中综合了均衡技术以及对载波相位及符号定时采用了同时的估算过程,弥补了器件的缺陷,具有较优良的性能,硬件实现比较容易.

In order to improve the performance of demodulator for QPSK,a scheme of associated baseband processing demodulator with adaptive equalization is presented in this paper.The results obtained from theoretical analysis and computer simulations show that the demodulator has the significant advantage compared with those already used because of adaptive equalization and the simultaneous estimation of carrier phase and symbol timing, which compensate the defects of devices.Furthermore,the scheme allows an easy hardware implementation.