Wireless Personal Communications

, Volume 72, Issue 2, pp 1453–1466 | Cite as

Symbol Detection of IDMA Systems in the Presence of Carrier Frequency Offsets

Article

Abstract

In this paper we investigate the detection algorithms for interleave division multiple access (IDMA) systems in the presence of carrier frequency offsets (CFOs). The existing IDMA detection algorithm is designed under the zero CFO assumption and its performance will be degraded when the CFOs are present. We first extend the existing algorithm to the nonzero CFO case by utilizing effective channel coefficients which take the CFO effects into account. Then we turn to a more practical scenario with imperfect CFO estimates. We propose an algorithm that can cope with the residual CFO effects by integrating the CFO updating into the iterative receiver. Signal-to-interference-plus-noise ratio analysis and simulations show the feasibility and superiority of our proposed algorithms.

Keywords

IDMA Carrier frequency offsets Soft interference cancelation SINR 

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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  1. 1.National Mobile Communications Research LaboratorySoutheast UniversityNanjingChina
  2. 2.Department of Electrical and Computer EngineeringColorado State UniversityFort CollinsUSA

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