A selective control information detection scheme for OFDM receivers

Saheed A. Adegbite, Scott G. McMeekin, Brian G. Stewart

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Abstract

In wireless communications, both control information and payload (user-data) are concurrently transmitted and required to be successfully recovered. This paper focuses on block-level detection, which is applicable for detecting transmitted control information, particularly when this information is selected or chosen from a finite set of information that are known at both transmitting and receiving devices. Using an orthogonal frequency division multiplexing architecture, this paper investigates and evaluates the performance of a time-domain decision criterion in comparison with a form of Maximum Likelihood (ML) estimation method. Unlike the ML method, the proposed time-domain detection technique requires no channel estimation as it uses the correlation (in the time-domain) that exists between the received and the transmitted selective information as a means of detection. In comparison with the ML method, results show that the proposed method offers improved detection performance, particularly when the control information consists of at least 16. However, the implementation of the proposed method requires a slightly increased number of mathematical computations.
Original languageEnglish
Pages (from-to)31-41
Number of pages11
JournalTelecommunication Systems
Volume64
Issue number1
Early online date13 Apr 2016
DOIs
Publication statusPublished - 6 Jan 2017

Keywords

  • channel estimation
  • time domain analysis
  • frequency division multiplexing
  • frequency estimation
  • maximum likelihood
  • maximum likelihood estimation
  • multiplexing
  • orthogonal frequency division multiplexing
  • wireless telecommunication systems, Energy efficiency
  • decision criterions
  • detection performance
  • mathematical computation
  • selective control
  • sequence correlation
  • sequence estimation
  • wireless communications
  • control information

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