Title :
Future army mobile multiple-access communications
Author_Institution :
Army Res. Lab., Adelphi, MD, USA
Abstract :
Code-division multiple access (CDMA) is accepted as the basic means of providing mobile multiple-access communications in future Army wireless networks. However direct sequence CDMA is susceptible to the near-far problem. Although in principle the solution to the near-far problem is power control, this paper shows that fading severely limits what power control can achieve. Frequency-hopping CDMA networks largely avoid the near-far problem by continually changing user carrier frequencies over appropriate hopsets. Other inherent advantages of frequency hopping desirable in the next generation of Army wireless communication networks are described
Keywords :
cellular radio; code division multiple access; fading; frequency hop communication; land mobile radio; military communication; power control; radio networks; spread spectrum communication; telecommunication control; US Army; cellular networks; code-division multiple access; direct sequence CDMA; fading; frequency-hopping CDMA networks; mobile multiple-access communications; near-far problem; power control; user carrier frequencies; wireless networks; Base stations; Frequency division multiaccess; Mobile communication; Multiaccess communication; Power control; Radio transmitters; Receiving antennas; Spread spectrum communication; Time division multiple access; Transmitting antennas;
Conference_Titel :
MILCOM 97 Proceedings
Conference_Location :
Monterey, CA
Print_ISBN :
0-7803-4249-6
DOI :
10.1109/MILCOM.1997.646701