deposit_your_work

Reduced QRD-M Detector in MIMO-OFDM Systems With Partial and Embedded Sorting

Files in this item

Files Size Format View
Guo2005Nov5ReducedQRD.PDF 241Kb application/pdf Thumbnail

Show full item record

Item Metadata

Title: Reduced QRD-M Detector in MIMO-OFDM Systems With Partial and Embedded Sorting
Author: Guo, Yuanbin; McCain, Dennis
Type: Conference Paper
Keywords: MIMO; OFDM; Detector; QRD-M; sorting
Publisher: IEEE ComSoc
Citation: Y. Guo and D. McCain,"Reduced QRD-M Detector in MIMO-OFDM Systems With Partial and Embedded Sorting," in IEEE Globecom,
Abstract: In this paper,we present a reduced QRD-M matrix symbol detector in MIMO-OFDM systems. The QRD-M algorithm first decomposes the MIMO channel matrix into upper triangular matrix and applies a limited tree search to approximate the maximum-likelihood detector. The metric update is reduced from O(4.5MC) to O(1.5MC) by extracting the commonality. We then propose a partial quick-sort procedure and an embedded insert sort to achieve almost linear sorting. In the second part, we present efficient VLSI architectures utilizing the parallelism between subcarriers and design the pipelining in the multi-stage MIMO processing. The real-time architecture is implemented in a FPGA-based hardware accelerator with compact form factor, which achieves up to 100Ã speedup in the simulation time.
Date Published: 2005-11-01

This item appears in the following Collection(s)

  • ECE Publications [1034 items]
    Publications by Rice University Electrical and Computer Engineering faculty and graduate students
  • CMC Publications [275 items]
    Publications by Rice Faculty and graduate students in multimedia communications