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Sparsity and Rank Exploitation for Time-Varying Narrowband Leaked OFDM Channel Estimation

Abstract: 

In this paper, the problem of time-varying narrowband leaked Orthogonal Frequency Division multiplexing (OFDM) channel estimation is considered. The leakage effect results from practical constraints on communication systems: finite bandwidth and block length. These practical constraints effectively render a sparse channel into a non-sparse one. The inherent low-rank structure of the received signal, determined by the number of dominant paths of the channel, is exploited. The current work extends prior work on single carrier systems to OFDM; herein, it is also known that leaked OFDM channel is separable in delay and Doppler domains. A convex optimization approach, based on the atomic norm heuristic, is developed. Optimality and uniqueness of the proposed channel estimation method are shown. Simulation results show superiority over the classical l1 element-wise sparse method with an average 8 dB improvement.

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Paper Details

Authors:
Amr Elnakeeb, Urbashi Mitra
Submitted On:
15 April 2018 - 2:12pm
Short Link:
Type:
Poster
Event:
Presenter's Name:
Amr Elnakeeb
Paper Code:
3116
Document Year:
2018
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Sparsity and Rank Exploitation for Time-Varying Narrowband Leaked OFDM Channel Estimation --poster.pdf

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[1] Amr Elnakeeb, Urbashi Mitra, "Sparsity and Rank Exploitation for Time-Varying Narrowband Leaked OFDM Channel Estimation", IEEE SigPort, 2018. [Online]. Available: http://sigport.org/2899. Accessed: Aug. 21, 2018.
@article{2899-18,
url = {http://sigport.org/2899},
author = {Amr Elnakeeb; Urbashi Mitra },
publisher = {IEEE SigPort},
title = {Sparsity and Rank Exploitation for Time-Varying Narrowband Leaked OFDM Channel Estimation},
year = {2018} }
TY - EJOUR
T1 - Sparsity and Rank Exploitation for Time-Varying Narrowband Leaked OFDM Channel Estimation
AU - Amr Elnakeeb; Urbashi Mitra
PY - 2018
PB - IEEE SigPort
UR - http://sigport.org/2899
ER -
Amr Elnakeeb, Urbashi Mitra. (2018). Sparsity and Rank Exploitation for Time-Varying Narrowband Leaked OFDM Channel Estimation. IEEE SigPort. http://sigport.org/2899
Amr Elnakeeb, Urbashi Mitra, 2018. Sparsity and Rank Exploitation for Time-Varying Narrowband Leaked OFDM Channel Estimation. Available at: http://sigport.org/2899.
Amr Elnakeeb, Urbashi Mitra. (2018). "Sparsity and Rank Exploitation for Time-Varying Narrowband Leaked OFDM Channel Estimation." Web.
1. Amr Elnakeeb, Urbashi Mitra. Sparsity and Rank Exploitation for Time-Varying Narrowband Leaked OFDM Channel Estimation [Internet]. IEEE SigPort; 2018. Available from : http://sigport.org/2899