Multistage multiuser detection for FHMA

Author

Halford, Karen W. ; Brandt-Pearce, Maité

Author_Institution

Intersil Corp., Melbourne, FL, USA

Volume

48

Issue

9

fYear

2000

fDate

9/1/2000 12:00:00 AM

Firstpage

1550

Lastpage

1562

Abstract

A multistage multiuser detector (MMD) is presented for frequency-hopping/code-division multiple access (FH/CDMA.) The MMD reduces the bit-error rate (BER) over the conventional detector by exploiting prior knowledge of the addresses and energies of the user signals. This detector is a conservative multiuser detector which is robust to unknown users and has a complexity that is only linear in the number of users. The performance analysis of the synchronous MMD includes both theoretical and simulation BERs for the noiseless case as well as simulation results that include the presence of noise. The MMD is then extended to the fully asynchronous case which makes this work the first to propose an FH/CDMA multiuser detector for asynchronous communications. This asynchronous MMD is compared via simulation to the conventional detector

Keywords

AWGN channels; code division multiple access; error statistics; frequency hop communication; interference suppression; multiuser channels; signal detection; spread spectrum communication; synchronisation; FHMA; asynchronous communications; bit-error rate; conservative multiuser detector; frequency-hopping/code-division multiple access; fully asynchronous case; interference suppression; multistage multiuser detection; multiuser channels; noise; noiseless case; performance analysis; simulation BERs; synchronous MMD; Analytical models; Bandwidth; Bit error rate; Detectors; Frequency division multiaccess; Interference; Multiaccess communication; Multiuser detection; Noise robustness; Spread spectrum communication;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/26.870022

Filename

870022