Parameter estimation in a multi-user communication system

Author

Moon, Todd K. ; Xie, Zhenhua ; Rushforth, Craig K. ; Short, Robert T.

Author_Institution

Dept. of Electr. Eng., Utah State Univ., Logan, UT, USA

Volume

42

Issue

8

fYear

1994

fDate

8/1/1994 12:00:00 AM

Firstpage

2553

Lastpage

2560

Abstract

Many of the previously-developed multiple-access detection algorithms have assumed knowledge of the time delay, the amplitude, and the phase of each user. This paper presents methods of estimating the amplitudes and phases, both when the time delays are known and when the delays are unknown. In neither case are the transmitted bits assumed to be known. The estimators are unbiased and consistent, and each has a computational complexity linear in the number of users. Simulations are provided to demonstrate performance

Keywords

delays; multi-access systems; parameter estimation; signal detection; telecommunication systems; BPSK; amplitude; computational complexity; multi-user communication system; multiple-access detection algorithms; parameter estimation; performance; phase; simulations; spread-spectrum multiple access; time delay; Amplitude estimation; Delay effects; Delay estimation; Detectors; Maximum likelihood detection; Maximum likelihood estimation; Moon; Parameter estimation; Phase detection; Phase estimation;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/26.310615

Filename

310615