Minimum BER FIR receiver filters for DS-CDMA systems

Author

Hjørungnes, Are ; Debbah, Mérouane

Author_Institution

Univ. Graduate Center, Oslo Univ.

Volume

4

fYear

2005

fDate

2-2 Dec. 2005

Lastpage

2291

Abstract

The problem of multi-user receiver design in direct sequence single antenna-code division multiple access (DS-CDMA) uplink networks is studied over multipath channels. An exact expression for the bit error rate (BER) is derived and an algorithm is proposed for finding the finite impulse response (FIR) receiver filters such that the exact BER of the active users is minimized. The algorithm performance is found for scenarios with different channel qualities, receiver filter lengths, near-far effects, and channel mismatch. The proposed FIR receiver structure has significant better BER with respect to E_b/N₀ and near-far resistance than the corresponding minimum mean square error (MSE) filters

Keywords

FIR filters; code division multiple access; error statistics; multipath channels; radio receivers; spread spectrum communication; BER; DS-CDMA systems; FIR receiver filters; MSE filters; bit error rate; channel mismatch; direct sequence single antenna-code division multiple access uplink networks; finite impulse response; mean square error filters; multipath channels; multiuser receiver design; near-far effects; near-far resistance; receiver filter lengths; Bit error rate; Finite impulse response filter; Frequency; MIMO; Mean square error methods; Mobile antennas; Mobile communication; Multiaccess communication; Multipath channels; Receiving antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 2005. GLOBECOM '05. IEEE

Conference_Location

St. Louis, MO

Print_ISBN

0-7803-9414-3

Type

conf

DOI

10.1109/GLOCOM.2005.1578071

Filename

1578071