DocumentCode :
1122573
Title :
Optimal Channelization in FDMA Communications
Author :
Gagliardi, R.M.
Author_Institution :
University of Southern California Los Angeles, Calif. 90007
Issue :
6
fYear :
1974
Firstpage :
867
Lastpage :
870
Abstract :
For most efficient performance in frequency-division multiple access (FDMA), a hard-limiting repeater should be operated completely channelized (i.e., each uplink carrier should be individually filtered and power-controlled prior to spacecraft limiting and downlink transmission). When there are a large number of uplink carriers involved, however, complete channelization is no longer feasible, and the uplink carriers must be grouped together (assigned frequencies), which allows joint filtering and amplification. In this correspondence, it is shown that an optimal grouping procedure always exists for minimizing required repeater power, no matter how many carriers and groups are to be used.
Keywords :
Aircraft navigation; Crosstalk; Downlink; Equations; Filtering; Frequency division multiaccess; Power amplifiers; Power generation; Repeaters; Satellite navigation systems;
fLanguage :
English
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9251
Type :
jour
DOI :
10.1109/TAES.1974.307895
Filename :
4101328
Link To Document :
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