Coexistence of DS CDMA PCN and analog FM: performance degradation of the SSSC-FM channels due to spread spectrum overlay

Author

Filis, K.G. ; Gupta, S.C.

Author_Institution

Dept. of Electr. Eng., Southern Methodist Univ., Dallas, TX, USA

fYear

1992

Firstpage

665

Lastpage

669

Abstract

The spectrum overlay of a CDMA PCN on a preexisting narrowband, analog, corrupted by AWGN FM channel is considered. This overlay can increase communications capacity, within a geographical area, and spectral efficiency. The overlayed PCN is assumed to employ DS spreading, using maximal length pseudorandom sequences. The interference the FM channel experiences is estimated, and an extremely severe test is simulated using a PCN overlayed on a preexisting 600-channel SSSC-FM FDM microwave line-of-sight radio link. It is found that the interference caused by the PCN depends on the carrier frequency separation between the two systems, the power of the EM system, the length of the SS system pseudorandom sequences, and the data rate and power of the PCN users

Keywords

code division multiple access; frequency division multiplexing; interference suppression; microwave links; personal communication networks; radiofrequency interference; spread spectrum communication; subcarrier multiplexing; telecommunication channels; 600-channel SSSC-FM FDM microwave line-of-sight radio link; DS CDMA PCN; DS spreading; EM system power; SSB suppressed carrier FDM channels; SSSC-FM channels; analog FM; carrier frequency separation; communications capacity; data rate; maximal length pseudorandom sequences; narrowband analog corrupted by AWGN FM channel; performance degradation; spectral efficiency; spread spectrum overlay; AWGN; Degradation; Interference; Microwave communication; Multiaccess communication; Narrowband; Personal communication networks; Radio link; Random sequences; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 1992. Proceedings, PIMRC '92., Third IEEE International Symposium on

Conference_Location

Boston, MA

Print_ISBN

0-7803-0841-7

Type

conf

DOI

10.1109/PIMRC.1992.279850

Filename

279850