NDLI: An improved channel-aware clipped matched frequencymlfopping (CMFH) signaling technique in slowly fading dispersive channels

Content Provider	IEEE Xplore Digital Library
Author	El-Khamy, S.E. Abdalla, F. Al-Hourani, A.
Copyright Year	2005
Description	Author affiliation: Dept. of Electr. Eng., Alexandria Univ. (El-Khamy, S.E.)
Abstract	Matched frequency hopping signals (MFH) signals has been proposed recently as an efficient channel-aware signaling technique in slowly fading dispersive channels. The hopping patterns of slow frequency hopping (SFH) signals are designed to match the channel transmission characteristics such that the hopped frequencies are concentrated in frequency slots of minimum attenuation and hence resulting in enhanced performance. An improved technique is presented in this paper by utilizing clipping of the channel response and extending the modulation to MFSK instead of binary FSK in previous work. In clipped MFH (CMFH) systems, the selection of the frequency slots is improved by clipping the frequency response of the dispersive channels such as to correspond to a maximized transmission through them and reduced transmission through frequency channels of higher attenuation. An analytical study of the bit error rate (BER) of the MFH/MFSK spread spectrum signals and the (CMFH) is presented. In the case of CMFH, the performance is improved and compared to that of MFH without clipping. The results show the advantage of CMFH technique and its importance as an efficient channel-aware spread spectrum signaling technique
Starting Page	385
Ending Page	394
File Size	1441298
Page Count	10
File Format	PDF
ISBN	9775031834
DOI	10.1109/NRSC.2005.194023
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-03-15
Publisher Place	Egypt
Access Restriction	Subscribed
Rights Holder	Academy of Scientific Research and Tech
Subject Keyword	Fading Dispersion Frequency shift keying Attenuation Bit error rate Spread spectrum communication Signal design Pattern matching Frequency response Signal analysis
Content Type	Text
Resource Type	Article

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