NDLI: Signal detection assisted from channel weight prediction for delay-sensitive orthogonal frequency-division multiplexing communications

Content Provider	IET Digital Library
Author	Lv, Changwei Lin, Jia Chin Hou, Shujuan Mei, Wenbo
Abstract	In signal coherent detection, data-aided (DA) method has high detection accuracy, but unavoidably suffers from a large processing delay. Meanwhile, a decision-directed (DD) method incurs no processing delay, but suffers from error propagation problem. Motivated by the above problems of DA and DD methods, the authors present a novel signal detection algorithm for delay-sensitive applications employing orthogonal frequency-division multiplexing systems. The proposed detection method provides similar detection accuracy to the DA method and incurs no processing delay. This method employs channel estimation followed by linear prediction and interpolation to obtain the channel-state information for symbol detection. To achieve a better prediction performance, they perform the linear prediction on the channel taps in the time domain, and conduct the interpolation using a raised cosine filter. Simulations on physical channel models verify the improvements of the proposed method.
Starting Page	1745
Ending Page	1750
Page Count	6
ISSN	17518628
Volume Number	8
e-ISSN	17518636
Issue Number	Issue 10, Jul (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/8/10
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2013.0975
Journal	IET Communications
Publisher Date	2014-05-19
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Channel Estimation Channel Weight Prediction Channel-state Information Communication Channel Equalisation And Identification DA Method Data-aided Method DD Method Decision Theory Decision-directed Method Delay Delay-sensitive Orthogonal Frequency-division Multiplexing Communication Error Propagation Problem Game Theory Interpolation Interpolation And Function Approximation Linear Prediction Modulation And Coding Method Numerical Analysis OFDM Modulation Physical Channel Model Radio Link And Equipment Radio Network Raised Cosine Filter Signal Coherent Detection Signal Detection
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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