Simulation of V-BLAST Detection Algorithm for 4x4 MIMO Systems

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Resource Overview

This program simulates V-BLAST detection algorithms for a 4-transmit 4-receive MIMO system. The implementation features QPSK modulation, quasi-static Rayleigh flat fading channels, and additive white Gaussian noise with zero mean. Four detection schemes (ZF, MMSE, ZF-OSIC, MMSE-OSIC) are compared through bit error rate performance analysis, with code-level descriptions of algorithm implementations.

Detailed Documentation

This paper presents a simulation of V-BLAST detection algorithms for a 4x4 MIMO system. The implementation employs QPSK modulation for signal transmission over quasi-static Rayleigh flat fading channels. The simulation framework incorporates four distinct detection algorithms at the receiver: Zero Forcing (ZF), Minimum Mean Square Error (MMSE), ZF with Ordered Successive Interference Cancellation (ZF-OSIC), and MMSE-OSIC. The performance comparison is conducted through bit error rate analysis under additive white Gaussian noise with zero mean. The code implementation includes channel matrix inversion computations for ZF/MMSE detectors and iterative interference cancellation routines for OSIC variants. This experimental study provides valuable insights into the performance trade-offs between different detection algorithms, offering significant reference value for future research in MIMO signal detection.

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