Digital spread-spectrum multipath-diversity receiver for indoor communications

Author

Kaufmann, Hans ; Küng, Roland ; Fawer, Urs

Author_Institution

Ascom Tech AG, Hombrechtikon, Switzerland

fYear

1992

fDate

10-13 May 1992

Firstpage

1038

Abstract

The design and performance measurements of a digital direct-sequence spread-spectrum (DS-SS) receiver for a wireless indoor communication system are provided. The system operates at a chip rate of 16.368×10⁶ chips/s with a processing gain of 30 dB. A RAKE-structure is used to resolve the time diversity due to multipath propagation. The received signal is despread in eight arms at the baseband using a digital time-integrating correlator. All algorithms for synchronization and data demodulation are implemented as software modules on a general-purpose digital signal processor (DSP). The authors give a derivation of these digital algorithms, a description of the hardware implementation, and results of the first measurements

Keywords

correlators; digital signal processing chips; diversity reception; mobile radio systems; radio receivers; spread spectrum communication; telecommunications computing; DS-SS receiver; DSP; RAKE-structure; chip rate; data demodulation; digital algorithms; digital direct-sequence spread-spectrum; digital time-integrating correlator; general-purpose digital signal processor; hardware implementation; indoor communications; multipath propagation; multipath-diversity receiver; performance measurements; processing gain; software modules; synchronization; time diversity; Arm; Baseband; Gain; Indoor communication; Measurement; RAKE receivers; Signal processing algorithms; Signal resolution; Spread spectrum communication; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1992, IEEE 42nd

Conference_Location

Denver, CO

ISSN

1090-3038

Print_ISBN

0-7803-0673-2

Type

conf

DOI

10.1109/VETEC.1992.245250

Filename

245250