DocumentCode :
1082288
Title :
An efficient modulation/coding scheme for MFSK systems on bandwidth constrained channels
Author :
Atkin, Guillermo E. ; Corrales, Hector P.
Author_Institution :
Illinois Inst. of Technol., Chicago, IL, USA
Volume :
7
Issue :
9
fYear :
1989
fDate :
12/1/1989 12:00:00 AM
Firstpage :
1396
Lastpage :
1401
Abstract :
The performance of a bandwidth-efficient multiple-tone modulation scheme for M-ary frequency-shift keying (MFSK) is presented. The use of balanced incomplete block (BIB) designs is proposed to form the signaling frames. On each symbol interval the modulator selects a group of elements from a BIB design and divides its energy into the orthogonal waveforms corresponding to these elements. The multiple-tone FSK scheme based on these block designs is shown to increase greatly the bandwidth efficiency of a conventional M-ary FSK system. An implicit diversity is incorporated in the modulation scheme. Thus, a performance improvement comparable to that obtained by using time or frequency diversity is shown on a Rayleigh fading channel and also on an interference channel with partial-band Gaussian noise. The multiple-tone scheme based on this design is compared to a multiple-tone scheme based on Hadamard matrices suggested by J.F. Pieper et al. (1978). It is shown that similar performance is achieved on a fading channel, while an advantage close to 4 dB is obtained for the proposed scheme on an AWGN (additive white Gaussian noise) channel
Keywords :
encoding; fading; frequency shift keying; telecommunication channels; AWGN; M-ary frequency-shift keying; MFSK systems; Rayleigh fading channel; balanced incomplete block design; bandwidth constrained channels; bandwidth-efficient multiple-tone modulation; implicit diversity; interference channel; modulation/coding scheme; partial-band Gaussian noise; signaling frames; AWGN; Bandwidth; Error correction; Fading; Frequency diversity; Frequency shift keying; Gaussian noise; Interference channels; Modulation coding; Signal design;
fLanguage :
English
Journal_Title :
Selected Areas in Communications, IEEE Journal on
Publisher :
ieee
ISSN :
0733-8716
Type :
jour
DOI :
10.1109/49.44578
Filename :
44578
Link To Document :
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