Title :
On the relative power levels required by handsets in DS-CDMA FH-CDMA and narrow band cellular radio systems
Author :
Aldis, J.P. ; Barton, S.K.
Author_Institution :
Dept. of Electron. Eng., Bradford Univ., UK
Abstract :
It has been suggested that the transmit powers required for a mobile unit in a cellular radio system are lower for DS-CDMA based systems than for systems using narrowband modulation. This paper investigates whether this is an intrinsic property of DS-CDMA. Ideal systems, all with the same thermal noise spectral density are considered. Coiling and interleaving are included. The results suggest that when systems are operating near capacity, DS-CDMA mobiles require similar transmit powers to mobiles in other systems. For system loads less than capacity, however, the power requirement of DS-CDMA mobiles is smaller than that of mobiles in other systems
Keywords :
cellular radio; code division multiple access; encoding; frequency hop communication; interleaved codes; land mobile radio; modulation; pseudonoise codes; radiotelephony; spread spectrum communication; telephone sets; DS-CDMA FH-CDMA; coiling; interleaving; mobile unit; narrow band cellular radio systems; narrowband modulation; relative power levels; thermal noise spectral density; Bit error rate; Frequency conversion; Frequency division multiaccess; Interleaved codes; Land mobile radio cellular systems; Multiaccess communication; Narrowband; Spread spectrum communication; Telephone sets; Time division multiple access;
Conference_Titel :
Vehicular Technology Conference, 1994 IEEE 44th
Conference_Location :
Stockholm
Print_ISBN :
0-7803-1927-3
DOI :
10.1109/VETEC.1994.345103
