A fast multi-level GFSK matched filter receiver
Tibenderana, C. and Weiss, S. (2004) A fast multi-level GFSK matched filter receiver. In: 6th International Conference on Mathematics in Signal Processing, 2004-12-14 - 2004-12-16.
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Abstract
Near optimal reception of a multilevel Gaussian frequency shift keying symbol can be achieved using a matched filter bank (MFB) receiver, which will require M^(K+L-1) filters for M modulation levels, a K-symbol observation interval, and a Gaussian filter with an L-symbol support length. This is prohibitive for most applications for the large values of K necessary to ensure best performance. In this paper we present a recursive algorithm that eliminates redundancy in providing the matched filter outputs by use of a smaller set of 1-symbol long intermediate filters, followed by an iterative process to propagate phase gained over K successive single symbol stages. If exemplarily operated in a Bluetooth receiver, the computational cost can be reduced by two orders of magnitude. Additionally we demonstrate that the intermediate filter outputs provide a means to detect carrier frequency and modulation index offsets, which can be corrected by iteratively recomputing the coefficients of the intermediate filter bank.
ORCID iDs
Tibenderana, C. and Weiss, S. ORCID: https://orcid.org/0000-0002-3486-7206;-
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Item type: Conference or Workshop Item(Paper) ID code: 38458 Dates: DateEvent2004PublishedSubjects: Technology > Electrical engineering. Electronics Nuclear engineering Department: Faculty of Engineering > Electronic and Electrical Engineering Depositing user: Pure Administrator Date deposited: 13 Mar 2012 15:13 Last modified: 03 Sep 2024 00:31 URI: https://strathprints.strath.ac.uk/id/eprint/38458