Multilevel control signaling for hybrid ARQ in the UMTS HSDPA system

Chang Rae Jeong, Seung Hoon Hwang, Hyuck Chan Kwon, Younghoon Whang

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

In this paper, we propose and analyze a multi-level acknowledgement scheme for hybrid ARQ (H-ARQ) systems, which modifies the general ACK/NAK signals to represent multilevel information. For instance, the other signals except the ACK/NAK signals may be used for scheduling of retransmission in the H-ARQ scheme, which results in increasing the resolution of the uplink channel estimation signals. Simulation results demonstrate that when the retransmission interval is set to the optimal length, the proposed H-ARQ scheme shows a 0.5-2 dB gain with properly selected parameters.

Original languageEnglish
Pages (from-to)334-337
Number of pages4
JournalIEICE Transactions on Communications
VolumeE92-B
Issue number1
DOIs
StatePublished - 2009

Keywords

  • HSDPA
  • Hybrid ARQ
  • Multilevel control signaling
  • UMTS

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