Design and Implementation of a Reliable QAM Baseband System Based on FPGA
Yilin Wang, Qiang Gao, Cuiping Liao, Cheng Chen · 2019
To reliably realize communication in complex interference environment, a reliable quadrature amplitude modulation (QAM) baseband system is designed. In the design, An adaptive equalization algorithm based on LMS is adopted to eliminate the inter-symbol crosstalk caused by multipath effect and improve the judgment accuracy of the receiver. At the same time, RS coding and interleaving concatenated error correction method are used in channel coding to reduce the bit error rate and enhance the reliability of system communication. The performances of system implemented by FPGA are tested under the multipath interference, additive white Gaussian noise, single-tone jamming and partial band respectively. which shows that the 16QAM communication system can achieve reliable data transmission in the case of larger noise and interference.