DocumentCode :
911178
Title :
Transmitter diversity for a digital FM paging system
Author :
Adachi, Fumiyuki
Author_Institution :
Nippon Telephone and Telegraph Public Corporation, Kanagaina-ken, Japan
Volume :
28
Issue :
4
fYear :
1979
Firstpage :
333
Lastpage :
338
Abstract :
Multipath fading is one of the most serious problems for the signal transmission in mobile radio. To combat this problem, the application of transmitter diversity to a digital FM paging system is described. The method is to transmit two digital FM paging signals with different modulation indices, each of which is modulated by an identical binary signal, from separate antennas. It is shown that the same action obtained with the well-known selection diversity can be achieved when the difference between the modulation indices is equal to two. The diversity effect on the bit-error-rate (BER) performance is theoretically analyzed. The diversity effect on the BER performance in a 600-bit/s Manchester-coded digital FM system is verified by the laboratory simulation tests using a Rayleigh fading simulator.
Keywords :
Bit error rate; Digital modulation; Fading; Laboratories; Land mobile radio; Performance analysis; Radio transmitters; Rayleigh channels; System testing; Transmitting antennas;
fLanguage :
English
Journal_Title :
Vehicular Technology, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9545
Type :
jour
DOI :
10.1109/T-VT.1979.23811
Filename :
1622652
Link To Document :
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