Iterative multiuser joint decoding based on ADMM

研究成果: Conference contribution

抄録

In this paper, we develop an iterative multiuser joint decoding of code-division multiple-access (CDMA) signals based on a distributed optimization algorithm. For the joint decoding problem, decoding algorithm based on the turbo principle is widely used. The algorithm consists of soft-input soft-output (SISO) channel decoder and SISO multiuser detector and it can be derived as an application of the sum-product algorithm. On the other hand, in the research area of error correcting codes, the decoding algorithm based on convex optimization has been attracting a great deal of attention. Decoding algorithm based on linear programming (LP) has decoding error rate which is comparable with sum-product algorithm with stronger theoretical guarantees. We formulate the joint decoding problem of CDMA signals as an convex optimization problem and we present a relax form of the problem. Moreover, we propose a distributed algorithm which efficiently solves the relaxed optimization problem. The proposed algorithm is based on alternating direction method of multipliers (ADMM). We also see the performance of the proposed decoder through numerical simulations.

本文言語English
ホスト出版物のタイトル2013 IEEE Global Conference on Signal and Information Processing, GlobalSIP 2013 - Proceedings
ページ1097-1100
ページ数4
DOI
出版ステータスPublished - 2013 12 1
イベント2013 1st IEEE Global Conference on Signal and Information Processing, GlobalSIP 2013 - Austin, TX, United States
継続期間: 2013 12 32013 12 5

出版物シリーズ

名前2013 IEEE Global Conference on Signal and Information Processing, GlobalSIP 2013 - Proceedings

Conference

Conference2013 1st IEEE Global Conference on Signal and Information Processing, GlobalSIP 2013
国/地域United States
CityAustin, TX
Period13/12/313/12/5

ASJC Scopus subject areas

  • 情報システム
  • 信号処理

フィンガープリント

「Iterative multiuser joint decoding based on ADMM」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル