摘要
协作通信能够抵抗无线信道衰落,是提高无线通信系统性能的有效手段。但是,其性能优势的发挥受信道时变的影响。文章研究了连续时变信道下协作通信系统的性能,为了准确反映信道连续时变情况,采用内插滤波高斯噪声法构建连续时变信道模型,选取误包率作为性能指标。仿真结果表明,连续时变信道下,随数据传输逐渐加重程度的过时信道状态信息将导致协作通信误包率性能大幅恶化。
Cooperative communication is one of the effective approaches to improve the performance of wireless communication since it can combat the fading of wireless channel. The implementation of its performance advantage is affected by the time-varying characteristic of wireless channel. In this paper, the performance of cooperative communication under continuous time-varying channel was studied. To accurately reflect the situation that channel was continuous time-varying, the interpolated filtered Gaussian noise approach was used to model the continuous time-varying channel and the packet error rate （PER） was chosen as the performance indicator. Simulation results showed that the outdated channel state information （CSI） whose degree was aggravated with data transmission would lead to large performance deterioration.
出处
《海军航空工程学院学报》
2016年第5期523-528,共6页
Journal of Naval Aeronautical and Astronautical University
关键词
连续时变信道
协作通信
过时信道状态信息
continuous time-varying channel
cooperative communication
outdated CSI
