An SFBC-OFDM receiver with MLSE equalizer to combat multiple frequency offsets

Jyun Yu Lee*, Hsin De Lin, Tzu-Hsien Sang

*Corresponding author for this work

Research output: Contribution to conferencePaper

8 Scopus citations

Abstract

Synchronization is an important issue arises when distributed multiple transmitters are deployed. Unlike conventional MIMO systems, cooperative transmitters may distribute geographically instead of co-locating at the same spot. Therefore, it is hard for the destination node to compensate multiple carrier frequency offsets (MCFOs) even if the cooperative transmitters use the same clock, and the conventional MIMO decoding strategy may not be suitable. In this paper, we consider cooperative SFBC-OFDM transmission with MCFOs. The proposed strategy carefully combines two sets of separately synchronized signal to mitigate inter-carrier interference (ICI). Maximum-likelihood sequence estimation (MLSE) and iterative interference cancellation is further deployed to improve performance. Simulation results show the diversity gain is maintained and an improved tolerance range of MCFOs is achieved.

Original languageEnglish
Pages1524-1527
Number of pages4
DOIs
StatePublished - 28 Sep 2012
Event2012 IEEE International Symposium on Circuits and Systems, ISCAS 2012 - Seoul, Korea, Republic of
Duration: 20 May 201223 May 2012

Conference

Conference2012 IEEE International Symposium on Circuits and Systems, ISCAS 2012
CountryKorea, Republic of
CitySeoul
Period20/05/1223/05/12

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