Performance analysis of SNR degradation by IS-95 filter in CDMA1xEV-DV system

Author

Heo, Seo Weon ; Ahn, Seong Woo ; Lim, Jong Han

Author_Institution

Core Technol. Res. LABS, Samsung Electron., Suwon, South Korea

Volume

1

fYear

2003

fDate

20-20 March 2003

Firstpage

491

Abstract

By design, IS-95 filter generates remaining ICI (interchip interference) after matched filtering in the receiver side. To keep the backward compatibility, IS-95 filter is recommended as a chip waveform shaping filter in all sequels of international standard from the 3GPP2. The performance degradation by the filter was not significant in a conventional QPSK modulation scheme but not negligible in the recently proposed system where multi-level modulation scheme is adopted. In this paper, we investigate the performance degradation caused by the ICI of the IS-95 filter and propose MMSE receiver filter to compensate for the performance loss. We apply the proposed receiver to CDMA1xEV-DV system where multi-level modulation is used.

Keywords

3G mobile communication; code division multiple access; least mean squares methods; matched filters; quadrature phase shift keying; radio receivers; radiofrequency interference; 3GPP2; CDMA1xEV-DV system; IS-95 filter; MMSE receiver filter; QPSK modulation scheme; SNR degradation; backward compatibility; chip waveform shaping filter; code division multiple access; interchip interference; matched filtering; multilevel modulation scheme; quadrature phase shift keying; signal to noise ratio; Automatic repeat request; Communication standards; Degradation; Filtering; Matched filters; Modulation coding; Multiaccess communication; Performance analysis; Performance loss; Quadrature phase shift keying;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Networking, 2003. WCNC 2003. 2003 IEEE

Conference_Location

New Orleans, LA, USA

ISSN

1525-3511

Print_ISBN

0-7803-7700-1

Type

conf

DOI

10.1109/WCNC.2003.1200398

Filename

1200398