Space-Time Filtering for Parallel-Channel Reuse in UMTS Downlink Transmission

Author

AlAmayreh, Ahmad ; Rahhal, Jamal

Author_Institution

Electron. & Commun. Eng. Dept., Al Ahliyya Amman Univ., Amman, Jordan

fYear

2011

Firstpage

1

Lastpage

5

Abstract

In this paper we investigate limitations facing high rate transmission in the downlink of UMTS systems. A solution is proposed based on space-time filtering to allow parallel channel transmission and spreading code reuse. The optimum receiver is derived taking into consideration non-ideality in space-time filtering caused by channel estimation errors. Comparisons with ordinary CDMA receivers, based on dispreading the received sequence with the same code used for transmission, show significant performance enhancement in system capacity, especially at large number of utilized parallel channels and in the presence of high channel estimation errors.

Keywords

3G mobile communication; channel estimation; code division multiple access; filtering theory; radio receivers; UMTS downlink transmission; channel estimation errors; ordinary CDMA receivers; parallel channel transmission; parallel-channel reuse; performance enhancement; space-time filtering; spreading code reuse; system capacity; 3G mobile communication; Channel estimation; Downlink; Filtering; Interference; Receivers; Throughput;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications, Networking and Mobile Computing (WiCOM), 2011 7th International Conference on

Conference_Location

Wuhan

ISSN

2161-9646

Print_ISBN

978-1-4244-6250-6

Type

conf

DOI

10.1109/wicom.2011.6040242

Filename

6040242