Rate-compatible SFBC-OFDM under rapidly time-varying channels
Kim, Kwanghoon Park, Hyuncheol Kwon, Hyuck M.
Kim, Kwanghoon
Park, Hyuncheol
Kwon, Hyuck M.
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Issue Date
2011-06-06
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Article
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Keywords
Channel estimation,Interchannel Interference,Ofdm,Time-varying Channels,Alamouti Codes,Analysis and simulation,Complex Fields,Intercarrier Interference,Interchannel Interference,Linear Receiver,Orthogonal Code,Orthogonal Frequency Division Multiplexing Systems,Rate-compatible,Time Varying,Time Varying Channel,Transmission Rates,Transmit Antenna,Transmit Diversity,Codes (symbols),Frequency Allocation,Orthogonal Frequency Division Multiplexing,Time Varying Networks,Time Varying Systems,Bit error rate
Subjects (LCSH)
Citation
K. Kim, H. Park and H. M. Kwon, "Rate-Compatible SFBC-OFDM under Rapidly Time-Varying Channels," in IEEE Transactions on Communications, vol. 59, no. 8, pp. 2070-2077, August 2011, doi: 10.1109/TCOMM.2011.053111.090181.
Abstract
An inter-carrier interference (ICI) occurs in an orthogonal frequency division multiplexing (OFDM) system when a channel is rapidly time-varying. The proposed scheme employs a polynomial cancellation code (PCC) to suppress this ICI, and uses a linear complex field (LCF) code as a transmit-diversity technique to make the transmission rate compatible up to nT/(nT+1), where nT is the number of transmit antennas used. The conventional orthogonal code (OC), such as the Alamouti code, with accompanying PCC cannot achieve this rate. Both analysis and simulation results verify that the proposed scheme can achieve higher channel capacity as well as lower bit error rate (BER) than the other schemes in rapidly time-varying channels, even with a linear receiver and inaccurate channel estimation. © 2011 IEEE. © 2011 Elsevier B.V., All rights reserved.
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This is an open access article under the CC BY license.
Publisher
Institute of Electrical and Electronics Engineers Inc.
Journal
IEEE Transactions on Communications
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15580857
00906778
00906778