Implementation of a coherent reverse channel 900 MHz CDMA receiver with reference symbols

Author

Sexton, Thomas A. ; Ling, Fuyun

Author_Institution

Adv. Cellular Technol., Motorola, Arlington Heights, IL, USA

Volume

2

fYear

1995

fDate

18-22 Jun 1995

Firstpage

1024

Abstract

There are many radio access standards contending for attention in the world-wide cellular marketplace. Practical estimator methods and sequences are introduced for the reference symbol based DS-CDMA radio (denoted “RC”). It is a physical layer scheme involving insertion of a known training sequence into the coded, interleaved bit stream for an IS-95-like CDMA reverse channel. This paper presents the principle estimators needed for implementation of an RC receiver, and frame error rate (FER) results for a flat fading channel. The frame error rate or Eb/No required for a 1% FER is given for both idealized and realistic conditions concerning time varying carrier frequency offset and delay slew of the received timing. A comparison to IS-95 shows a 2 dB improvement

Keywords

cellular radio; code division multiple access; delays; error statistics; estimation theory; fading; land mobile radio; pseudonoise codes; radio receivers; spread spectrum communication; 900 MHz; CDMA receiver; DS-CDMA radio; IS-95; UHF; cellular radio; coded interleaved bit stream; coherent reverse channel; delay slew; estimator methods; flat fading channel; frame error rate; physical layer; radio access standards; received timing; reference symbol based receiver; reference symbols; time varying carrier frequency offset; training sequence; Delay; Error analysis; Frequency; Multiaccess communication; Physical layer; Radio transmitters; Receivers; Speech; Timing; Vocoders;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 1995. ICC '95 Seattle, 'Gateway to Globalization', 1995 IEEE International Conference on

Conference_Location

Seattle, WA

Print_ISBN

0-7803-2486-2

Type

conf

DOI

10.1109/ICC.1995.524256

Filename

524256