Compressed Channel Sensing using Designated Null Subcarriers in Full Duplex Wireless OFDM Systems
- Authors
- Lee, Jong-Ho; Kim, Yong-Hwa
- Issue Date
- Dec-2014
- Publisher
- SPRINGER
- Keywords
- Full duplex; Compressed sensing; Self-interference suppression; Orthogonal frequency division multiplexing (OFDM)
- Citation
- WIRELESS PERSONAL COMMUNICATIONS, v.79, no.3, pp.1635 - 1645
- Journal Title
- WIRELESS PERSONAL COMMUNICATIONS
- Volume
- 79
- Number
- 3
- Start Page
- 1635
- End Page
- 1645
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/39443
- DOI
- 10.1007/s11277-014-1949-y
- ISSN
- 0929-6212
- Abstract
- In this paper, we examine the digital cancellation of self-interference in full duplex wireless orthogonal frequency division multiplexing systems. Since digital cancellation highly depends on the accurate estimation of self-interference channels, which tends to be sparse, we propose a compressed sensing based channel estimator that uses designated null subcarriers. Our numerical results show that, by providing more accurate estimates of self-interference channels, the proposed scheme outperforms the conventional least square methods in terms of the self-interference suppression.
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