Abstract

Problem statement: This study presents the performance analysis of multi-user Multi Input Multi Output (MIMO) assisted interleave based multiple-access system. In IDMA, different interleavers are used to distinguish users as against different signature sequence in a conventional code-Division Multiple-Access (CDMA) scheme. Approach: The basic principle of IDMA is that the interleaver is unique for the users. Results: In this study, we consider that Interleavers are generated independently and randomly. Also the IDMA technique is extended to multi user MIMO IDMA with multi-user detection. At the receiver, OSIC detector is realized using ZF for frequency fading channel to combat MAI and MUI problem. The performance of the system is analyzed for different channel conditions using extensive simulation runs based on Monte Carlo simulation trials. Conclusion: It is shown that the IDMA scheme can achieve near single user performance in situations with very large numbers of users while maintaining very low receiver complexity. It is discerned from the computer simulation results that IDMA outperforms CDMA in frequency selective channel for high load conditions.

Highlights

  • Code division multiple access system is the most asynchronous transmission, Cross cell interference and widely used system for multi-user communications

  • code-division multiple-access (CDMA) fading is circumvented by the use of multi-user detection (Wang et al, 2010) Theoretical interleavers placed between FEC and spreading

  • Systems In this study, we investigate the performance of the Multi Input and Multi Output (MIMO) assisted interleave division multiple access (MIMO- Interleave-Division Multiple-Access (IDMA)) scheme with multiuser detection

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Summary

Introduction

Code division multiple access system is the most asynchronous transmission, Cross cell interference and widely used system for multi-user communications. CDMA fading is circumvented by the use of multi-user detection (Wang et al, 2010) Theoretical interleavers placed between FEC and spreading.

Results
Conclusion
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