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Partial ML Detection for Frequency-Asynchronous Distributed Alamouti-Coded (FADAC) OFDM

Title
Partial ML Detection for Frequency-Asynchronous Distributed Alamouti-Coded (FADAC) OFDM
Authors
Kim, Bong-SeokNa, DongjunChoi, Kwonhue
DGIST Authors
Kim, Bong-Seok
Issue Date
2019-09
Citation
Wireless Communications and Mobile Computing, 2019, 4319802
Type
Article
Article Type
Article
Keywords
COOPERATIVE SYSTEMS
ISSN
1530-8669
Abstract
To further enhance frequency-asynchronous distributed Alamouti-coded (FADAC) orthogonal frequency division multiplexing (OFDM), we propose a new scheme which combines the partial maximum likelihood detection (PMLD) to the residual intercarrier interference cancellation (RIC). In order to decrease the performance gap from intercarrier interference- (ICI-) free level after single time iteration of the RIC, the final stage of the proposed scheme performs the PMLD limited to the symbols of less-reliable decision variables. We show that with the practically acceptable candidate symbol set size, a single iteration for RIC is enough to achieve the ICI-free performance. Moreover, the proposed scheme substantially expands the allowable ranges of the three undesirable terms, i.e., the timing and frequency offsets between the transmit antennas and the multipath delay spreads. © 2019 Bong-seok Kim et al.
URI
http://hdl.handle.net/20.500.11750/10892
DOI
10.1155/2019/4319802
Publisher
Hindawi Limited
Files:
Collection:
Division of Automotive Technology1. Journal Articles


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