Webbläsaren som du använder stöds inte av denna webbplats. Alla versioner av Internet Explorer stöds inte längre, av oss eller Microsoft (läs mer här: * https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Var god och använd en modern webbläsare för att ta del av denna webbplats, som t.ex. nyaste versioner av Edge, Chrome, Firefox eller Safari osv.

Algorithm and implementation of the K-best sphere decoding for MIMO detection

In English

Författare

  • Zhan Guo
  • Peter Nilsson

Summary, in English

K-best Schnorr-Euchner (KSE) decoding algorithm is proposed in this paper to approach near-maximum-likelihood (ML) performance for multiple-input-multiple-output (MIMO) detection. As a low complexity MIMO decoding algorithm, the KSE is shown to be suitable for very large scale integration (VLSI) implementations and be capable or supporting soft outputs. Modified KSE (MKSE) decoding algorithm is further proposed to improve the performance of the soft-output KSE with minor modifications. Moreover, a VLSI architecture is proposed for both algorithms. There are several low complexity and low-power features incorporated in the proposed algorithms and the VLSI architecture. The proposed hard-output KSE decoder and the soft-output MKSE decoder is implemented for 4 x 4 16-quadrature amplitude modulation (QAM) MIMO detection in a 0.35-mu m and a 0.13-mu m CMOS technology, respectively. The implemented hard-output KSE chip core is 5.76 mm(2) with 91 K gates. The KSE decoding throughput is up to 53.3 Mb/s with a core power consumption of 626 mW at 100 MHz clock frequency and 2.8 V supply. The implemented soft-output MKSE chip can achieve a decoding throughput of more than 100 Mb/s with a 0.56 mm(2) core area and 97 K gates. The implementation results show that it is feasible to achieve near-ML performance and high detection throughput for a 4 x 4 16-QAM MIMO system using the proposed algorithms and the VLSI architecture with reasonable complexity.

Publiceringsår

2006

Språk

Engelska

Sidor

491-503

Publikation/Tidskrift/Serie

IEEE Journal on Selected Areas in Communications

Volym

24

Issue

3

Dokumenttyp

Artikel i tidskrift

Förlag

IEEE - Institute of Electrical and Electronics Engineers Inc.

Ämne

  • Electrical Engineering, Electronic Engineering, Information Engineering

Nyckelord

  • Schnorr-Euchner algorithm
  • sphere decoder
  • very large scale integration (VLSI)
  • multiple-input-multiple-output (MIMO)

Status

Published

Forskningsgrupp

  • Elektronikkonstruktion

ISBN/ISSN/Övrigt

  • ISSN: 1558-0008