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Performance analysis of impulse‐radio ultra‐wideband energy detector system using cooperative dual‐hop amplify and forward strategy
Author(s) -
Hazra R.,
Tyagi A.
Publication year - 2015
Publication title -
international journal of communication systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.344
H-Index - 49
eISSN - 1099-1131
pISSN - 1074-5351
DOI - 10.1002/dac.3018
Subject(s) - computer science , bit error rate , relay , cooperative diversity , detector , diversity combining , ultra wideband , keying , electronic engineering , telecommunications , diversity gain , energy (signal processing) , hop (telecommunications) , algorithm , wireless , fading , mathematics , wireless network , decoding methods , statistics , physics , power (physics) , engineering , quantum mechanics
Summary A novel analytical representation of bit error rate (BER) performance of an impulse‐radio ultra‐wideband energy detector on–off keying system using cooperative dual‐hop amplify and forward relay technology, with various diversity combining schemes over IEEE 802.15.4a environment is presented in this paper. In particular, the approximate expressions based on energy detection principle are derived for various diversity combining cases, namely linear optimal combining, linear combining, and selective combining. Simulation results depict an improvement in BER performance, with increase in number of relay paths ( L ) and decrease in number of frames per symbol ( N f ). Furthermore, the BER performance of the impulse‐radio ultra‐wideband energy detector on–off keying system improves substantially using dual‐hop cooperative amplify and forward scheme, compared with that of non‐cooperative or single link scenario. Among the diversity combining schemes, linear optimal diversity combining performs better when compared with linear diversity combining and selective combining. The analytical BER expressions are validated with the simulation results, which confirm the accuracy and precision in approximation used in the investigation of BER. Copyright © 2015 John Wiley & Sons, Ltd.