Performance of VoIP in HSDPA based on an adaptive power allocation scheme

Author

Seo, Young Ik ; Sung, Dan Keun

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Korea Adv. Inst. of Sci. & Technol., Daejeon

Volume

4

fYear

2006

fDate

3-6 April 2006

Firstpage

2088

Lastpage

2093

Abstract

In the HSDPA system, code multiplexing in one TTI is required to transmit packets for multiple VoIP users. This paper proposes an adaptive power allocation (APA) scheme for code multiplexing. The proposed APA scheme adaptively allocates the transmit power to each user in downlink according to the user´s link status. The user capacity in the HSDPA system based on the proposed APA scheme is compared with that of the conventional equal power allocation (EPA) scheme through simulation. The simulation results show that the user capacity of HSDPA based on the proposed APA scheme is 136, compared to 75 of the conventional EPA scheme

Keywords

3G mobile communication; Internet telephony; code division multiple access; multiplexing; radio links; HSDPA; VoIP; adaptive power allocation scheme; code multiplexing; equal power allocation; user capacity; Data communication; Delay; Downlink; Internet telephony; Modulation coding; Multiaccess communication; Scheduling algorithm; System performance; Throughput; Web and internet services;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Networking Conference, 2006. WCNC 2006. IEEE

Conference_Location

Las Vegas, NV

ISSN

1525-3511

Print_ISBN

1-4244-0269-7

Electronic_ISBN

1525-3511

Type

conf

DOI

10.1109/WCNC.2006.1696618

Filename

1696618