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Fractionally Spaced Equalization for Asynchronous Broadband Analog Network Coding
Zhaoxi FANG Feng LIANG Shaozhong ZHANG Xiaolin ZHOU
Publication
IEICE TRANSACTIONS on Communications
Vol.E95-B
No.11
pp.3617-3620 Publication Date: 2012/11/01 Online ISSN: 1745-1345
DOI: 10.1587/transcom.E95.B.3617 Print ISSN: 0916-8516 Type of Manuscript: LETTER Category: Wireless Communication Technologies Keyword: analog network coding, asynchronous, bi-directional transmission, fractionally spaced equalizer,
Full Text: PDF(260.4KB)>>
Summary:
Timing asynchronism strongly degrades the performance of analog network coded (ANC) bi-directional transmission. This letter investigates receiver design for asynchronous broadband bi-directional transmission over frequency selective fading channels. Based on time domain oversampling, we propose fractionally spaced frequency domain minimum mean square error (MMSE) equalizers for bi-directional ANC based on orthogonal frequency division multiplexing (OFDM) and cyclic prefixed single carrier (CP-SC) radio access. Simulation results show that the proposed fractionally spaced equalizer (FSE) can eliminate the negative effect of timing misalignment in bi-directional transmissions.
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