Adaptive OFDM system with limited feedback using truncated channel impulse response

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3 Scopus citations

Abstract

This work presents a new adaptive orthogonal frequency division multiplexing (OFDM) system for limited feedback channels. The proposed system is designed to minimize the number of feedback bits sent to the transmitter by sending a quantized and truncated version of the estimated channel impulse response. The truncation process is performed using the assumption that the maximum delay spread is less than the cyclic prefix of the OFDM symbol, which is typically the case in most wireless OFDM systems. Monte Carlo simulation is used to evaluate the system performance in terms of throughput and bit error rate (BER) under imperfect forward and feedback channel conditions. Simulation results reveal that the proposed system outperforms state-of-the-art techniques for the same number of feedback bits.

Original languageBritish English
Title of host publication2015 IEEE International Symposium on Signal Processing and Information Technology, ISSPIT 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages197-202
Number of pages6
ISBN (Electronic)9781509004805
DOIs
StatePublished - 28 Jan 2016
Event15th IEEE International Symposium on Signal Processing and Information Technology, ISSPIT 2015 - Abu Dhabi, United Arab Emirates
Duration: 7 Dec 201510 Dec 2015

Publication series

Name2015 IEEE International Symposium on Signal Processing and Information Technology, ISSPIT 2015

Conference

Conference15th IEEE International Symposium on Signal Processing and Information Technology, ISSPIT 2015
Country/TerritoryUnited Arab Emirates
CityAbu Dhabi
Period7/12/1510/12/15

Keywords

  • Adaptive modulation
  • channel estimation
  • delay
  • Doppler
  • feedback
  • OFDM

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