An iterative DFE receiver for MIMO SC-FDMA uplink

Dhivagar, B and Kuchi, K and Giridhar, K (2014) An iterative DFE receiver for MIMO SC-FDMA uplink. IEEE Communications Letters, 18 (12). pp. 2141-2144. ISSN 1089-7798

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Ever since the adoption of the single carrier frequency division multiple access (SC-FDMA) scheme for the uplink in the Long Term Evolution (LTE) standard, there has been much interest in improved receiver algorithms for the same. Successive interference cancelation (SIC) based turbo receivers (Turbo SIC) have been proposed to tackle the multi-stream interference (MSI) for transmission modes such as spatial multiplexing (SM) and multiuser (MU) multiple input multiple output (MIMO). In addition, decision feedback equalizers (DFE) have been discussed as an alternative to the simple linear minimum mean square error (LMMSE) based receivers to suppress intersymbol interference (ISI) caused by the frequency selective multi-path channel. This paper proposes a DFE receiver variant based on parallel interference cancelation (PIC) with maximum likelihood detection (MLD) and ordered SIC (OSIC) principles to suppress ISI and MSI. Simulations show that the proposed receiver performs better than the existing SIC and DFE based receivers and achieves the matched filter bound (MFB) for both coded and uncoded systems.

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IITH Creators:
IITH CreatorsORCiD
Item Type: Article
Uncontrolled Keywords: Adaptive systems; Channel estimation; Decision feedback equalizers; Decoding; Intersymbol interference; Iterative methods; Long Term Evolution (LTE); Matched filters; Maximum likelihood; Mean square error; MIMO systems; Signal receivers Linear minimum mean square error(LMMSE); Maximum likelihood detection; Multi-stream interference (MSI); Multiple input multiple output; PIC; SC-FDMA; SIC; Successive interference cancelations
Subjects: Others > Electricity
Divisions: Department of Electrical Engineering
Depositing User: Team Library
Date Deposited: 06 Jan 2015 05:19
Last Modified: 06 Jan 2015 05:19
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