Low Complexity Signal Detector for MIMO MCCDMA System for Longer Delay Channel


  • Papa Rao Challagundla
  • P Sumithabhashini
  • P Chandrasekhar Reddy






Multiple-input multiple-output (MIMO), minimum mean square error (MMSE), and Code Division Multiple Accesses, Spreading gain Maximum Likelihood, Multiple Access Interference (MAI) etc.


In recent years Multiple-input multiple-output (MIMO) Multi carrier code division multiple access (MCCDMA), which combines the advantage of diversities with high spectral efficiency has drawn great attention. In this paper we introduce a novel low-complexity multiple-input multiple-output (MIMO) MMSE detector tailored for MCDCDMA systems, suitable for frequency selective channel. The proposed detector begins with estimation of the minimum mean square error (MMSE) on less reliable symbols followed by iterative de-correlation as post-detection processing for mitigating multiple access interferences. Efficient high-throughput VLSI architecture is used to achieve superior performance compared to the conventional MMSE detectors. The performance of the proposed MMSE detector is close to the efficient maximum likelihood, with significant complexity reduction over higher order constellations. The efficiency of MIMO MCCDMA over high order constellations and its quality retentions are verified through MATLAB BER simulation.




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How to Cite

Rao Challagundla, P., Sumithabhashini, P., & Chandrasekhar Reddy, P. (2018). Low Complexity Signal Detector for MIMO MCCDMA System for Longer Delay Channel. International Journal of Engineering & Technology, 7(3.12), 423–426. https://doi.org/10.14419/ijet.v7i3.12.16121
Received 2018-07-23
Accepted 2018-07-23
Published 2018-07-20