Coherent detection with reference-symbol based channel estimation for direct sequence CDMA uplink communications

Author

Ling, Fuyun

Author_Institution

Motorola, Inc., Schaumburg, IL, USA

fYear

1993

fDate

18-20 May 1993

Firstpage

400

Lastpage

403

Abstract

A new coding/modulation arrangement for up-link direct-sequence code division multiple access (DS-CDMA) communication, which employs coherent detection with reference-symbol based channel estimation, is presented. It is shown that the required E_b/N_O for this scheme is about 2 dB to 2.5 dB lower than non-coherent detection of Walsh coding with bit interleaving and about 1 dB to 1.3 dB lower than noncoherent detection with Walsh symbol interleaving over the entire range of practical vehicle speeds. A frequency domain analysis of this scheme is given

Keywords

channel coding; code division multiple access; frequency-domain analysis; interleaved codes; pseudonoise codes; signal detection; spread spectrum communication; DS-CDMA; Walsh symbol interleaving; coherent detection; direct sequence CDMA uplink communications; frequency domain analysis; reference-symbol based channel estimation; Base stations; Channel estimation; Frequency domain analysis; Gas detectors; Interleaved codes; Modulation coding; Multiaccess communication; Personal communication networks; Vehicle detection; Vehicles;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1993., 43rd IEEE

Conference_Location

Secaucus, NJ

ISSN

1090-3038

Print_ISBN

0-7803-1267-8

Type

conf

DOI

10.1109/VETEC.1993.507496

Filename

507496