DocumentCode :
756860
Title :
ALOHA/TDM Systems with Multiple Downlink Capacity
Author :
Eaves, Reuben E.
Author_Institution :
Lincoln Lab., MIT, Cambridge, MA
Volume :
27
Issue :
3
fYear :
1979
fDate :
3/1/1979 12:00:00 AM
Firstpage :
537
Lastpage :
541
Abstract :
The concept of a processing satellite with multiple slotted ALOHA uplinks to efficiently fill a TDM downlink is extended to include multiple downlinks. Throughput is derived for a general configuration with 
ALOHA uplinks and 
TDM downlinks. An optimization procedure is described to select the and which maximize throughput for a given bandwidth constraint. The ALOHA/TDM system with multiple downlink capacity is found to be up to 32% more spectrum-efficient than the conventional slotted ALOHA system. The ALOHA/TDM system also has the potential for payload power and weight savings and decreased passive intermodulation problems.
ALOHA uplinks and TDM downlinks. An optimization procedure is described to select the and which maximize throughput for a given bandwidth constraint. The ALOHA/TDM system with multiple downlink capacity is found to be up to 32% more spectrum-efficient than the conventional slotted ALOHA system. The ALOHA/TDM system also has the potential for payload power and weight savings and decreased passive intermodulation problems.Keywords :
Packet switching; Satellite communication, multiaccess; Time-division multiplexing; Bandwidth; Constraint optimization; Downlink; Frequency; Payloads; Satellites; Throughput; Time division multiplexing; Transmitters; Transmitting antennas;
fLanguage :
English
Journal_Title :
Communications, IEEE Transactions on
Publisher :
ieee
ISSN :
0090-6778
Type :
jour
DOI :
10.1109/TCOM.1979.1094430
Filename :
1094430
Link To Document :
