Interleaver design for IDMA system under multipath fading channel

• Main Authors: Yi-Cheng Wu, 吳翼丞
• Other Authors: Li-Der Jeng
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/91078144521377616687

碩士 === 中原大學 === 電子工程研究所 === 103 === Interleave-division multiple access (IDMA) is a new wireless communication technique which has been recently discussed in the research field of communications. In IDMA system, interleavers play a key role. Such as code-division multiple access (CDMA) system which different users use different spreading codes, for the IDMA system, different users employ user- specific interleaver to distinguish different users. IDMA system inherits a number of advantages from CDMA system. Recent studies indicate that the performance of IDMA system is better than that of CDMA system. In this paper, we compare the performance of different kinds of interleavers for IDMA system. Besides, we design a new interleaving scheme to enhance the system performance. We also consider the size of interleaver which influences the system performance. Furthermore, the IDMA receiver uses a low cost iterative chip-by-chip multiuser detection algorithm. Finally, we will show the performance results by simulation under the multipath fading channel.