东南大学学报（英文版）2017，Vol.33Issue(3)：266-272,7.DOI:10.3969/j.issn.1003-7985.2017.03.003
一种应用于可重构结构的自适应预编码/空时分组编码基带收发系统设计
Design of an adaptive precoding/STBC baseband transceiver on a reconfigurable architecture
摘要
Abstract
Precoding and space-time block coding (STBC) techniques using the uniform channel decomposition (UCD) are proposed to improve the bit error rate (BER) of the multiple-antenna communication system, but at a cost of a reduced data rate. In order to achieve a higher overall system performance, a novel adaptive transceiver architecture which flexibly combines both UCD and UCD+STBC technologies is proposed. The channel state information (CSI) feedback path was added to the precoder to select which coding method was to be used, i. e. UCD alone or UCD + STBC. With the smaller constellation sizes, Matlab simulation results show that, the adaptive transceiver architecture will select the UCD-only mode under the higher SNR conditions in order to achieve a higher bit rate. The UCD +STBC mode will be selected under the lower SNR conditions (e.g., SNR < 10 dB) in order to maintain good BER performance at the cost of a reduced data rate. This architecture was implemented and verified using both UMC 0.18 ASIC process technology and a Xilinx xc4vlx Virtex-4 FPGA at 150 MHz. The simulation results demonstrate that the required number of reconfigurable arithmetic unit slices grows linearly with the channel matrix size, while the number of adder array unit and reconfigurable logic unit slices increases slightly with the constellation size.关键词
预编码/均匀信道分解(UCD)/空时分组编码(STBC)/自适应收发器/基带架构重构Key words
precoding/uniform channel decomposition(UCD)/space-time block coding ( STBC)/adaptive transceiver/reconfigurable baseband architecture分类
信息技术与安全科学引用本文复制引用
叶云飞,吴宁,葛芬,周芳..一种应用于可重构结构的自适应预编码/空时分组编码基带收发系统设计[J].东南大学学报（英文版）,2017,33(3):266-272,7.基金项目
The National Natural Science Foundation of China (No.61376025), the Industry-Academic Joint Technological Innovations FundProject of Jiangsu (No. BY2013003-11), the Scientific Innovation Research of College Graduates in Jiangsu Province(No.KYLX_0273). （No.61376025）
