TD-SCDMA传输信道编码复用与解码解复用的仿真

TD-SCDMA标准是由中国提出的,以我国知识产权为主的、被国际上广泛接受和认可的无线通信国际标准。本文主要研究TD-SCDMA上行链路物理层的核心技术即传输信道编解码和复用解复用技术。TD-SCDMA采用了比较完善的编码复用方案,首先对数据流进行复杂的编码和复用,经过物理信道映射之后再对数据进行扩频加扰和调制,最后由天线以适当的功率发射出去。本文对编码复用以及解码解复用过程建立仿真模型,讨论了模型中各模块的具体实现算法。在MATLAB中对TD-SCDMA上行链路物理层传输信道编码复用和解码解复用过程进行了仿真,验证了算法的正确性。

Simulation and analysis of coding multiplexing and decoding demultiplexing on physical transmission of TD-SCDMA system

The TD-SCDMA system, which is first put forward by China, has been widely accepted and recognized by the international on international standards for wireless communications.In this paper, an indepth analysis on the channel coding/decoding and multiplexing/demultiplexing which is the core technology of uplink physical layer is proposed. TD-SCDMA adopts a more perfect program of coding complex. Firstly the data streams are being coded and multiplexed, Then the data streams are spread spectrum scrambled and modulated after physical channel mapping. Finally, the data streams are sent by antennas in an appropriate power. The modules of coding multiplexing and decoding demultiplexing are made and the algorithm of each module in the realization model is confirmed.To ensure the method is right, we simulate the process of channel coding/ multiplexing and decoding/demultiplexing of TD-SCDMA for uplink based on MATLAB.