Diversity combining with imperfect channel estimates in correlated fading

Author

Gifford, Wesley M. ; Win, Moe Z. ; Chiani, Marco

Author_Institution

Massachusetts Inst. of Technol., Cambridge, MA

Volume

44

Issue

3

fYear

2008

fDate

7/1/2008 12:00:00 AM

Firstpage

852

Lastpage

860

Abstract

In this paper, we present a framework for evaluating the bit error probability (BEP) of N _d-branch diversity combining with imperfect channel estimates in correlated fading environments. The estimator structure is based on the maximum likelihood estimate and arises naturally as the sample mean of N _p pilot symbols. Our results show that the diversity order of the system under consideration matches that of an ideal system operating in the same correlated fading environment, regardless of the number of pilot symbols.

Keywords

channel estimation; correlation methods; diversity reception; error statistics; fading channels; maximum likelihood estimation; N_d-branch diversity combining; bit error probability; correlated fading; imperfect channel estimation; maximum likelihood estimation; Bandwidth; Diversity reception; Error probability; Fading; Materials science and technology; Maximum likelihood estimation; Signal to noise ratio; Spread spectrum communication; Ultra wideband communication; Wireless communication;

fLanguage

English

Journal_Title

Aerospace and Electronic Systems, IEEE Transactions on

Publisher

ieee

Conference_Location

7/1/2008 12:00:00 AM

ISSN

0018-9251

Type

jour

DOI

10.1109/TAES.2008.4655348

Filename

4655348