Title :
Comparing FH/SSMA and DS/CDMA networks: capacity vs anti-jam margin tradeoff
Author :
Gamal, Hesham El ; Geraniotis, Evaggelos
Author_Institution :
Dept. of Electr. Eng., Maryland Univ., College Park, MD, USA
Abstract :
We evaluate the capacity of the reverse link of a synchronous FH/SSMA multi-cell network in the presence of partial band jamming. A set of orthogonal frequency hopping (FH) patterns is assigned to the users in each cell. Cells are differentiated by concatenating the user FH pattern with a shuffling sequences of the same hop rate. The use of guard times enables synchronous operation for the range of hopping rates of interest. The capacities of the above FH/SSMA network with either coherent BPSK modulation or non-coherent BFSK modulation are first evaluated for the AWGN channel. The effect of power control errors on the system performance is accounted for in each case. Then the effects of Rayleigh fading are factored in. Similar results for asynchronous DS/SS cellular network (reverse link) are also reported for comparison purpose
Keywords :
AWGN channels; Rayleigh channels; cellular radio; channel capacity; code division multiple access; frequency hop communication; frequency shift keying; jamming; military communication; multiuser channels; phase shift keying; power control; radio links; spread spectrum communication; telecommunication control; AWGN channel; DS/CDMA networks; Rayleigh fading; anti-jam margin; asynchronous DS/SS cellular network; coherent BPSK modulation; guard times; hop rate; military application; noncoherent BFSK modulation; orthogonal frequency hopping patterns; partial band jamming; power control errors; reverse link capacity; shuffling sequences; synchronous FH/SSMA multi-cell network; synchronous operation; system performance; AWGN channels; Binary phase shift keying; Error correction; Frequency; Jamming; Land mobile radio cellular systems; Multiaccess communication; Power control; Rayleigh channels; System performance;
Conference_Titel :
Military Communications Conference, 1998. MILCOM 98. Proceedings., IEEE
Conference_Location :
Boston, MA
Print_ISBN :
0-7803-4506-1
DOI :
10.1109/MILCOM.1998.722176
