Abstract

This paper provides the performance analysis of multiuser Vertical Bell Laboratories Layered Space-Time (V-BLAST) system receiver structures for Multiple-input Multiple-Output (MIMO) channel at a base station with assumption of perfect channel estimation and perfect timing delay estimation. In MIMO channels the receivers such as decorrelator, Minimum Mean Square Error (MMSE) and Multistage Parallel Interference Cancellation (MPIC) receiver outperform the conventional receiver. Withal, since the multiple antenna interference led to a strong impact on the performance degradation of a multistage interference cancellation receiver, the performance of MPIC receiver was highly degraded based on system loading.

Highlights

  • Several techniques are used in wireless communication system for sharing available spectrum resources

  • This paper provides the performance analysis of multiuser Vertical Bell Laboratories Layered Space-Time (V-BLAST) system receiver structures for Multiple-input Multiple-Output (MIMO) channel at a base station with assumption of perfect channel estimation and perfect timing delay estimation

  • Since the multiple antenna interference led to a strong impact on the performance degradation of a multistage interference cancellation receiver, the performance of Multistage Parallel Interference Cancellation (MPIC) receiver was highly degraded based on system loading

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Summary

Introduction

Several techniques are used in wireless communication system for sharing available spectrum resources These techniques include: frequency division multiple access (FDMA), time division multiple access (TDMA) and code division multiple access (CDMA). The performance of multiuser detection along a MIMO downlink system is presented in [6]. The performance of the V-BLAST algorithm combined with multi-user detection in downlink system is evaluated in [8]. OFDM techniques can compensate for multi-path fading effects, which cause time dispersion, and out of band emission of the received signal Of late, significant progress has been made in multiuser detection for code- division multiple-access (CDMA) systems [3]. The structure of a downlink system is much simpler since the MIMO channel is shared to all users.

System Model
Conventional Receiver
Decorrelating Receiver
Simulation Results and Analysis
Conclusions
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