Narrow band interference cancelation in OFDM: Astructured maximum likelihood approach

Citation data:

2012 IEEE 13th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), Page: 45-49

Publication Year:
2012
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Repository URL:
http://hdl.handle.net/10754/564567
DOI:
10.1109/spawc.2012.6292950
Author(s):
Sohail, Muhammad Sadiq; Al-Naffouri, Tareq Y.; Al-Ghadhban, Samir N.
Publisher(s):
Institute of Electrical and Electronics Engineers (IEEE); IEEE
Tags:
Engineering; Computer Science
conference paper description
This paper presents a maximum likelihood (ML) approach to mitigate the effect of narrow band interference (NBI) in a zero padded orthogonal frequency division multiplexing (ZP-OFDM) system. The NBI is assumed to be time variant and asynchronous with the frequency grid of the ZP-OFDM system. The proposed structure based technique uses the fact that the NBI signal is sparse as compared to the ZP-OFDM signal in the frequency domain. The structure is also useful in reducing the computational complexity of the proposed method. The paper also presents a data aided approach for improved NBI estimation. The suitability of the proposed method is demonstrated through simulations. © 2012 IEEE.