Cyclic-prefix CDMA with antenna diversity
Cyclic-prefix CDMA with antenna diversity
复制标题
具有天线分集的循环前缀 CDMA
DOI：
10.1109/vtc.2002.1002639
复制
发表时间：
2002
期刊：
影响因子：
--
通讯作者：
K. Baum
中科院分区：
文献类型：
--
作者：
F. Vook;T. Thomas;K. Baum
本文探讨了在最近提出的循环前缀码分多址（CP - CDMA）系统概念中添加天线分集方案。CP - CDMA是一种新型的单载波直接序列码分多址，它采用类似正交频分复用（OFDM）的循环前缀，目的是在宽带码分多址蜂窝系统中实现高效的频域均衡。CP - CDMA旨在用于高带宽、高时延扩展的蜂窝信道（特别是在前向链路中），例如从当前3G码分多址标准演进的系统所设想的那些信道。本文针对在宽带高时延扩展信道中高用户负载和多级调制下工作的CP - CDMA系统，提出了发射和接收天线分集技术。仿真结果表明，所提出的发射分集技术和接收频域均衡比以前使用瑞克接收的基于沃尔什码的发射分集方法具有优越得多的性能。
This paper explores the addition of antenna diversity schemes to the recently-proposed cyclic-prefix CDMA (CP-CDMA) system concept CP-CDMA is a novel type of single carrier DS-CDMA that employs OFDM-style cyclic prefixes for the purposes of facilitating efficient frequency-domain equalization in broadband CDMA cellular systems. CP-CDMA is intended for high-bandwidth, high-delay-spread cellular channels (especially in the forward link), such as those envisioned for systems that evolve from current 3G CDMA standards. This paper proposes transmit and receive antenna diversity techniques for CP-CDMA systems that operate with high user loading and multi-level modulation in broadband high delay-spread channels. Simulation results show that the proposed transmit diversity technique and receive frequency domain equalization provide vastly superior performance than previous Walsh-code-based transmit diversity methods using RAKE reception.