Analysis of RAKE reception with MRC and imperfect weight estimation for binary coherent orthogonal signaling

Author

Singh, Deepti ; Kumari, Anita ; Mallik, Ranjan K. ; Jamuar, Sudhanshu S.

Author_Institution

Centre for Dev. of Telematics, DWDM Group, New Delhi, India

Volume

6

Issue

6

fYear

2002

fDate

6/1/2002 12:00:00 AM

Firstpage

245

Lastpage

247

Abstract

We consider a RAKE receiver for coherent binary orthogonal signaling employing predetection maximal-ratio combining (MRC), in which the tap weights are estimated by adding two matched filtered outputs using the two reference signals. The weight estimation errors here are not independent of the additive channel noise, and therefore do not fit into the Gaussian error model for MRC. Instead of analyzing the distribution of the weight estimation errors, we find the characteristic function of the decision variable, and from it we obtain a formula for the symbol error probability.

Keywords

Rayleigh channels; diversity reception; error statistics; parameter estimation; radio receivers; telecommunication signalling; Gaussian error model; RAKE receiver; RAKE reception; additive channel noise; binary coherent orthogonal signaling; decision variable; fading channel; i.i.d. Rayleigh fading; imperfect weight estimation; matched filtered outputs; maximal-ratio combining; predetection MRC; reference signals; symbol error probability; tap weights; weight estimation errors distribution; Additive noise; Delay estimation; Diversity reception; Error probability; Estimation error; Fading; Impedance matching; Matched filters; Multipath channels; Wideband;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2002.1010869

Filename

1010869