TELKOMNIKA Telecommunication, Computing, Electronics and Control
A novel delay dictionary design for compressive sensing-based time varying channel estimation in OFDM systems

TELKOMNIKA Telecommunication, Computing, Electronics and Control
A novel delay dictionary design for compressive sensing-based time varying channel estimation in OFDM systems

Channel estimation, Compressive sensing, LTV channel, OFDM

Compressive sensing (CS) is a new attractive technique adopted for linear time varying channel estimation. orthogonal frequency division multiplexing (OFDM) was proposed to be used in 4G and 5G which supports high data rate requirements. Different pilot aided channel estimation techniques were proposed to better track the channel conditions, which consumes bandwidth, thus, considerable data rate reduced. In order to estimate the channel with minimum number of pilots, compressive sensing CS was proposed to efficiently estimate the channel variations. In this paper, a novel delay dictionary-based CS was designed and simulated to estimate the linear time varying (LTV) channel. The proposed dictionary shows the suitability of estimating the channel impulse response (CIR) with low to moderate Doppler frequency shifts with acceptable bit error rate (BER) performance.

Maryam K. Abboud, Bayan M. Sabbar

DOI: 10.12928/TELKOMNIKA.v18i5.14223

Universitas Ahmad Dahlan

October 2020

Sri Wahyuni

ISSN: 1693-6930

http://journal.uad.ac.id/index.php/TELKOMNIKA

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TELKOMNIKA Telecommunication, Computing, Electronics and Control