DocumentCode :
295262
Title :
FSK and DPSK over unresolved multipath Rayleigh fading channels
Author :
Danilo, Florence ; Leib, Harry
Author_Institution :
Dept. of Electr. Eng., McGill Univ., Montreal, Que., Canada
Volume :
2
fYear :
1995
fDate :
27-29 Sep 1995
Firstpage :
477
Abstract :
In this paper we present single pulse performance of detection structures for fading multipath channels with common modulation formats such as FSK and DPSK. The multipath components are assumed to be unresolved, with known delays. These delays could have been estimated, for example, by sounding the channel with a pulse of much wider bandwidth than that of the information conveying signal. This paper shows that it is possible to have diversity-like gains over multipath fading channels with unresolved components even if the channel is not fully tracked. However the required SNR to achieve such diversity gains is highly dependent on the modulation formats. Properly designed receivers for unresolved multipath channels may reduce the SNR, where the diversity gains are achieved, and lower significantly the error floors. It is shown that a quadratic decorrelation receiver performs well over unresolved multipath channels
Keywords :
Rayleigh channels; delays; differential phase shift keying; diversity reception; fading; frequency shift keying; indoor radio; land mobile radio; multipath channels; radio receivers; signal detection; DPSK; FSK; SNR; common modulation formats; delays; detection structures; diversity-like gains; error floors; modulation formats; quadratic decorrelation receiver; radio indoor environment; single pulse performance; unresolved multipath Rayleigh fading channels; Bandwidth; Decorrelation; Delay estimation; Differential quadrature phase shift keying; Diversity methods; Fading; Frequency shift keying; Multipath channels; Pulse modulation; Rayleigh channels;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 1995. PIMRC'95. Wireless: Merging onto the Information Superhighway., Sixth IEEE International Symposium on
Conference_Location :
Toronto, Ont.
Print_ISBN :
0-7803-3002-1
Type :
conf
DOI :
10.1109/PIMRC.1995.480914
Filename :
480914
Link To Document :
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