Original scientific paper
https://doi.org/10.24138/jcomss.v16i3.999
Chicken Swarm Optimization for PTS based PAPR Reduction in OFDM Systems
Saruti Gupta
; Electronics & Comm. Engineering Department, JIIT, Noida
Ashish Goel
; Electronics & Comm. Engineering Department, JIIT, Noida
Abstract
Partial transmit sequence (PTS) is a well-known
PAPR reduction scheme for the OFDM system. One of the major
challenge of this scheme is to find an optimal phase vector using
exhaustive search over all the allowed phase factor combinations.
This leads to increased search complexity which grows
exponentially as the number of sub-blocks is increased. In this
paper, chicken swarm optimization (CSO) based PTS system is
designed that aims to find an optimal solution in less number of
average iterations and therefore results in reduced computational
complexity of the system. We have proposed two categories of the
algorithm: (i) CSO-PTS system without threshold limit on PAPR
(ii) CSO-PTS system with threshold limit on PAPR. Both the
schemes offer effective trade-offs between the computational
complexity and the PAPR reduction capability of the system.
Simulation results confirm that our proposed schemes perform
well in terms of low computational complexity, lesser number of
average iterations and improved PAPR reduction capability of
the OFDM signal without any loss in BER performance of the
system.
Keywords
Hrčak ID:
243981
URI
Publication date:
30.9.2020.
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