Parallel Channels for High Rate UTRAN

Authors: Ahmad Amayreh¹; Jamal Rahhal²

Source: International Journal of Wireless Information Networks, Volume 11, Number 4, October 2004 , pp. 187-199(13)

Publisher: Springer

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Abstract:

The method proposed in this paper uses space–time filtering to support parallel channel transmission as an effort to solve two main limitations facing UMTS Terrestrial Radio Access Network (UTRAN): throughput limitation and capacity limitation at high bit rates. The overall system capacity in the case of a spreading factor of 4 was enhanced by adding four channels, leading to a total physical layer throughput of 6.5 Mbps with a slight reduction in the performance of less than 1 dB for some users, while other users performance remain without any degradation. In another case where a spreading factor 8 was used adding four parallel channels leads to a total throughput of 5.1 Mbps with only 1.5 dB reduction in the performance of some users. Finally in the case of a spreading factor of 16, with a reduction of less than 3 dB in performance, an addition of eight parallel channels leads to a throughput of about 5 Mbps.

Keywords: Parallel channels; space–time filter; UMTS; UTRAN; WCDMA

Document Type: Research article

DOI: http://dx.doi.org/10.1007/s10776-004-1311-5

Affiliations: 1: Electrical Engineering Department, University of Jordan, Amman, Jordan, Email: Ahmad_amayreh@yahoo.com 2: Electrical Engineering Department, University of Jordan, Amman, Jordan, Email: rahhal@ju.edu.jo

Publication date: 2004-10-01