Abstract: The authors emphasize on transmitter adaption problem of SC-FDE, and propose an ASC-FDE scheme characterized by constant sending info rate and average block power based on PCSI, or CR-ASC-FDE, and theoretically analyze its block average signal to noise ratios employing ZF and MMSE linear equalization methods. Simulations show that the proposed CR-ASC-FDE scheme has much better BER performance than traditional SC-FDE, improves BER performance compared with another ASC-FDE scheme and its OFDM counterpart, and also proves ZF algorithm to be an ideal linear equalization method for PCSI-based ASC-FDE schemes.

Key words: SC-FDE, PCSI, adaptive, allocation mask, zero forcing

摘要： 研究了单载波频域均衡(SC-FDE)技术中的发端自适应问题,提出了一种基于部分信道信息(PCSI)的发送信息速率和块平均功率恒定的ASC-FDE方案(CR-ASC-FDE), 针对迫零和最小均方误差两种线性均衡方法对其块平均接收信噪比进行了理论分析。仿真结果表明, CR-ASC-FDE 在保持符号速率恒定和块平均发送功率恒定的基础上, 其误比特性能大大优于传统 SC-FDE,也优于其他采用部分信道信息的 ASC-FDE 方案和OFDM 类似方案。仿真结果还表明迫零算法是基于 PCSI 的 ASC-FDE 方案理想的线性均衡方式。

关键词: 单载波频域均衡, 部分信道状态信息, 自适应, 分配掩码, 迫零