电子科技大学学报2011，Vol.40Issue(2)：185-191,7.DOI:10.3969/j.issn.1001-0548.2011.02.005
双差分协作传输的误码率性能分析和最佳功率分配
SER Performance Analysis and Optimum Power Allocation for Double Differential Cooperative Transmission
摘要
Abstract
A double differential cooperative transmission (DDCT) scheme using quadrature amplitude modulation (QAM) is proposed to overcome carrier frequency offset in cooperative transmission. A closed-form symbol error rate (SER) formulation, an SER upper bound, and an asymptotic SER approximation at high SNR are derived. Based on the asymptotic SER approximation, an approximate solution of optimum power allocation (OPA)at high signal-to-noise ratio (SNR) is derived. The simulation results demonstrate that the approximate solution of OPA also provides a good solution to a realistic moderate SNR scenario. The SER performance of DDCT with QAM modulation and DDCT with phase shift keying (PSK) modulation is compared in condition of same modulation order. The comparison results demonstrate that DDCT-QAM outperforms the DDCT-PSK, when the modulation order is larger than 8. Specially, when the modulation order equals to 64, DDCT-QAM obtains a 4.5 dB SNR gain.关键词
协作传输/双差分调制/频率偏移/正交幅度调制/误符号率Key words
cooperative transmission/ double differential modulation/ frequency offset/ quadrature amplitude modulation/ symbol error rate分类
信息技术与安全科学引用本文复制引用
高洋,葛建华,谢大平..双差分协作传输的误码率性能分析和最佳功率分配[J].电子科技大学学报,2011,40(2):185-191,7.基金项目
长江学者和创新团队发展计划(IRT0852) （IRT0852）
国家科技重大专项(2009ZX03003-003,2009ZX03003-004) （2009ZX03003-003,2009ZX03003-004）
国家111计划(B08038) （B08038）
国家自然科学基金(61001207) （61001207）
中央高校基本科研业务费专项资金(K50510010017) （K50510010017）
