A hybrid ARQ scheme with power ramping

Author

Hwang, Seung-Hoon ; Kim, Bonghoe ; Kim, Young-Sam

Author_Institution

ATRA Dept, LG Electron., Ltd, Kyungki-do, South Korea

Volume

3

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

1579

Abstract

We propose and analyze a scheme for wireless channels, which is a combination of a hybrid type I automatic repeat request (ARQ) scheme and a power ramping. In the hybrid type I ARQ scheme, the same redundancy bits for error correction is transmitted repeatedly when a negative acknowledgment (NAK) is obtained. In addition to the ARQ scheme, the power ramping is considered for more reliable downlink data transmission, in which the transmission power is gradually changed from a small level to large levels when the number of retransmission increases. This is done without any knowledge of the channels at the transmitter. Simulation results show that by applying the combined hybrid ARQ and power ramping scheme with properly selected parameters, it has a throughput advantage of 3-5%

Keywords

automatic repeat request; cellular radio; code division multiple access; data communication; digital simulation; forward error correction; multiuser channels; radio links; spread spectrum communication; telecommunication channels; DS-CDMA system; FEC; cellular communication systems; forward error correction; hybrid type I ARQ; hybrid type I automatic repeat request; negative acknowledgment; power ramping; redundancy bits; reliable downlink data transmission; simulation results; throughput; wireless channels; Automatic repeat request; Communication system traffic; Data communication; Error correction; Forward error correction; Interference; Protocols; Quality of service; Redundancy; Throughput;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2001. VTC 2001 Fall. IEEE VTS 54th

Conference_Location

Atlantic City, NJ

ISSN

1090-3038

Print_ISBN

0-7803-7005-8

Type

conf

DOI

10.1109/VTC.2001.956464

Filename

956464