Feasibility study on DS-CDMA/TDMA frequency sharing system

Author

Matsuda, Takahiro ; Hara, Shinsuke ; Morinaga, Norihiko

Author_Institution

Graduate Sch. of Eng., Osaka Univ., Japan

Volume

2

fYear

1997

fDate

8-12 Jun 1997

Firstpage

974

Abstract

In this paper, we discuss the co-existence of DS-CDMA and TDMA systems where both systems share the same frequency band to improve the spectral efficiency. We evaluate the capacity of a DS-CDMA/(frequency-multiplexed) TDMA frequency sharing system, and show that the system can provide a greater capacity than a single multiple access scheme-based system such as DS-CDMA or TDMA, when we employ an active narrowband interference rejection technique for the TDMA signals. The rejection of the narrowband TDMA signals can significantly improve the bit error rate performance of the CDMA system and total capacity of co-existence

Keywords

channel capacity; code division multiple access; error statistics; frequency division multiplexing; interference suppression; land mobile radio; notch filters; radiofrequency interference; spread spectrum communication; time division multiple access; DS-CDMA/TDMA frequency sharing system; active narrowband interference rejection technique; bit error rate performance; capacity; feasibility study; frequency band; frequency-multiplexing; notch filtering; spectral efficiency; Bandwidth; Bit error rate; Degradation; Filtering; Frequency; Interference; Multiaccess communication; Narrowband; Spread spectrum communication; Time division multiple access;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 1997. ICC '97 Montreal, Towards the Knowledge Millennium. 1997 IEEE International Conference on

Conference_Location

Montreal, Que.

Print_ISBN

0-7803-3925-8

Type

conf

DOI

10.1109/ICC.1997.610024

Filename

610024