Title: Allocation of power for Universal Mobile Telecommunication Services network during Soft Handoff
Authors: S. Tamilselvan, K. Manivannan
Addresses: Department of Electronics and Communication Engineering, Pondicherry Engineering College, Pondicherry 605014, India. ' Department of Electronics and Communication Engineering, Pondicherry Engineering College, Pondicherry 605014, India
Abstract: In order to provide a multiple services, especially multimedia and high-bit-rate packet data, Universal Mobile Telecommunication Services adopted Wideband Code Division Multiple Access (WCDMA) act as the mainstream air interface solution for the third-generation networks. An in-depth study of Soft Handoff (SHO) in the downlink direction of WCDMA network is carried out. The link-level study begins with the SHO effects on the downlink interference analysis and power allocation for each downlink-dedicated channel. To the users at the cell boundaries, the inter-cell interference is the main part of the total interference, especially with higher orthogonality. Simulation result shows that SHO decreases the probability of over-power Quality of Service (QoS) deterioration for the users at cell boundaries. However, 2-way SHO has a better performance than hard handoff and 3-way SHO, because it requires less dedicated power to meet the QoS for corner users.
Keywords: corner users; downlink; hard handoff; interference; mobile communications; orthogonality; quality of service; QoS; soft handoff; universal mobile telecommunication services; wideband code division multiple access; WCDMA networks; power allocation.
International Journal of Mobile Communications, 2009 Vol.7 No.3, pp.382 - 393
Published online: 07 Mar 2009 *Full-text access for editors Access for subscribers Purchase this article Comment on this article