NDLI: Noncoherent detection of digitally phasor block-modulated signals in the presence of DC offset

Content Provider	IEEE Xplore Digital Library
Author	Char-Dir Chung
Copyright Year	2004
Description	Author affiliation: Dept. of Commun. Eng., Nat. Central Univ., Chung-li, Taiwan (Char-Dir Chung)
Abstract	In this paper, we deal with noncoherent data detection of digitally phase modulated signals in the additive white Gaussian noise channel when a direct-current (DC) offset is present in the receiver baseband processing. By processing the received baseband signal block by block, a generalized linear transform is proposed to remove the offset prior to demodulation, thereby releasing the succeeding data detection process from the threat of DC offset. Operating on transform output blocks, a maximum-likelihood scheme is developed for noncoherently demodulating a phasor block modulated signal when the amplitude and carrier phase of the received signal are unknown. The block detection scheme is analytically shown to provide the bit error performance asymptotically approaching that of the corresponding ideal coherent phase-shift-keyed detection in the absence of DC offset when the block length is increased. An iterative detection scheme is also modified from the block detection scheme to simplify the realization complexity.
Starting Page	2118
Ending Page	2122
File Size	692199
Page Count	5
File Format	PDF
ISBN	0780385217
ISSN	10903038
DOI	10.1109/VETECF.2004.1400414
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-09-26
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Baseband Signal processing Phase detection AWGN Phase modulation Additive white noise Demodulation Frequency conversion Filtering Coupling circuits
Content Type	Text
Resource Type	Article

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