基于IDMA系统的正交扩频并行结构设计与实现  

Design and Implementation of Orthogonal Spreading Sequences for Parallel Structure in IDMA System

作　　者：毛海军[1] 

机构地区：[1]中国电信股份有限公司西宁分公司,青海西宁810001

出　　处：《无线电工程》2016年第12期12-16,共5页Radio Engineering

摘　　要：基于交织多址系统,结合正交序列的互相关性特点,提出将正交扩频序列应用于新的系统结构中进行扩频处理,取代了传统采用重复编码进行扩频的方式。与传统方式相比,新方式在不改变信息传输速率且误比特率(BER)性能损失很小的情况下,减少硬件存储资源开销,降低上行链路中基站端多用户检测数据长度。理论分析和仿真结果表明,提出的方案能够在较少增加系统结构复杂度的情况下,实现降低运算复杂度和时延的目的。Based on the Interleave-Division Multiple-Access system and the cross-correlation characteristics of the orthogonal sequence,this paper proposes a new structure with the orthogonal spreading sequences,and the traditional structure of repetition coding is replaced.On the conditions of no change of information transmission rate and less loss of the bit-error-rate performance, the new struc- ture reduces hardware storage resource overhead and the data length in the uplink of the base station side in comparison with the tradi- tional structure.The theoretical analysis and simulation results show that the new structure reduces the computational complexity and de- lay with less increase in the structural complexity of system.

关 键 词：交织多址 正交扩频序列 多用户检测 TURBO码 

分 类 号：TN92[电子电信—通信与信息系统]