A Highly Parallelized MIMO Detector for Vector-Based Reconfigurable Architectures

Chenxin Zhang, Liang Liu, Yian Wang, Meifang Zhu, Ove Edfors, Viktor Öwall

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review

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Abstract

This paper presents a highly parallelized MIMO signal detection algorithm targeting vector-based reconfigurable architectures. The detector achieves high data-level parallelism and near-ML performance by adopting a vector-architecture-friendly technique - parallel node perturbation. To further reduce the computational complexity, imbalanced node and successive partial node expansion schemes in conjunction with sorted QR decomposition are applied. The effectiveness of the proposed algorithm is evaluated by simulations performed on a simplified 4x4 MIMO LTE-A testbed and operation analysis. Compared to the K-Best detector and fixed-complexity sphere decoder (FSD), the number of visited nodes in the proposed algorithm is reduced by 15 and 1.9 times respectively, with less than 1dB performance degradation. Benefiting from the fully deterministic non-iterative dataflow structure, reconfiguration rate is 95% less than that of the K-Best detector and 17% less than the case of FSD.
Original languageEnglish
Title of host publication[Host publication title missing]
PublisherIEEE - Institute of Electrical and Electronics Engineers Inc.
Pages3844-3849
Number of pages6
DOIs
Publication statusPublished - 2013
EventIEEE Wireless Communications and Networking Conference (WCNC), 2013 - Shanghai, China
Duration: 2013 Apr 72013 Apr 10

Conference

ConferenceIEEE Wireless Communications and Networking Conference (WCNC), 2013
Country/TerritoryChina
CityShanghai
Period2013/04/072013/04/10

Subject classification (UKÄ)

  • Electrical Engineering, Electronic Engineering, Information Engineering

Free keywords

  • MIMO
  • signal detection
  • vector processor
  • data parallelization

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