DETERMINISTIC DESIGN OF JOINT PILOT POWER AND PILOT PATTERN IN OFDM SYSTEMS

Priya G , Mrs. Mariya Vincent , Mr. Ajith Joseph

OFDM, Compressive Sensing, CDS, MIP, sparse channel

Orthogonal Frequency Division Multiplexing (OFDM) is a digital transmission method developed to meet the increasing demand for higher data rates in communications. In OFDM, to obtain channel state information (CSI) channel estimation (CE) is performed with the aid of pilot symbols. In this paper, different pilot design schemes for sparse channel estimation based on minimizing coherence is considered. Initially condition for optimum pilot pattern with respect to channel length is derived. Since generated pilot pattern is optimum only for those which satisfies the condition L ≥N/2. A greedy algorithm namely stochastic sequential search is proposed for those cases pilot pattern generated from CDS is not optimum. Later, joint design of pilot power and pattern is done. Finally, simulation results using matlab shows that SSS converge much faster than exhaustive search. With joint design both pilot power and pilot position are updated in optimum manner. The result is a fast greedy technique that performs almost same as the existing competitors with significantly lower computational complexity.

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"DETERMINISTIC DESIGN OF JOINT PILOT POWER AND PILOT PATTERN IN OFDM SYSTEMS", IJSDR - International Journal of Scientific Development and Research (www.IJSDR.org), ISSN:2455-2631, Vol.2, Issue 7, page no.40 - 47, June-2017, Available :https://ijsdr.org/papers/IJSDR1707006.pdf

Volume 2 Issue 7, June-2017

Pages : 40 - 47

Paper Reg. ID: IJSDR_170590

Published Paper Id: IJSDR1707006

Downloads: 000347173

Research Area: Engineering

Country: ALAPPUZHA, KERALA, India

Published Paper PDF: https://ijsdr.org/papers/IJSDR1707006

Published Paper URL: https://ijsdr.org/viewpaperforall?paper=IJSDR1707006

ISSN: 2455-2631 | IMPACT FACTOR: 9.15 Calculated By Google Scholar | ESTD YEAR: 2016

An International Scholarly Open Access Journal, Peer-Reviewed, Refereed Journal Impact Factor 9.15 Calculate by Google Scholar and Semantic Scholar | AI-Powered Research Tool, Multidisciplinary, Monthly, Multilanguage Journal Indexing in All Major Database & Metadata, Citation Generator

Publisher: IJSDR(IJ Publication) Janvi Wave

This work is licensed under a Creative Commons Attribution 4.0 International License and The Open Definition