INTERNATIONAL JOURNAL OF SCIENTIFIC DEVELOPMENT AND RESEARCH International Peer Reviewed & Refereed Journals, Open Access Journal ISSN Approved Journal No: 2455-2631 | Impact factor: 8.15 | ESTD Year: 2016
open access , Peer-reviewed, and Refereed Journals, Impact factor 8.15
DETERMINISTIC DESIGN OF JOINT PILOT POWER AND PILOT PATTERN IN OFDM SYSTEMS
Authors Name:
Priya G
, Mrs. Mariya Vincent , Mr. Ajith Joseph
Unique Id:
IJSDR1707006
Published In:
Volume 2 Issue 7, June-2017
Abstract:
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.
"DETERMINISTIC DESIGN OF JOINT PILOT POWER AND PILOT PATTERN IN OFDM SYSTEMS", International Journal of Science & Engineering Development Research (www.ijsdr.org), ISSN:2455-2631, Vol.2, Issue 7, page no.40 - 47, June-2017, Available :http://www.ijsdr.org/papers/IJSDR1707006.pdf
Downloads:
000337070
Publication Details:
Published Paper ID: IJSDR1707006
Registration ID:170590
Published In: Volume 2 Issue 7, June-2017
DOI (Digital Object Identifier):
Page No: 40 - 47
Publisher: IJSDR | www.ijsdr.org
ISSN Number: 2455-2631
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