Antenna Switching Schemes for Downlink Time Switched Transmit Diversity with ARQ in Rayleigh Fading Channels

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概要

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• For automatic repeat request (ARQ)-aided TSTD (Time Switched Transmit Diversity) system, a receiver sends the acknowledgement signal (ACK or NACK) to a transmitter in order to predict the condition of the channel. In this paper, two antenna switching schemes, in which the NACK trigger the transmit antenna switching in the proposed antenna switching patterns, are proposed for the TSTD with the ARQ in WCDMA LCR-TDD systems. In addition, the system performances are investigated. Simulation results demonstrate that the performances of the TSTD systems can be improved by applying the ARQ scheme. Furthermore, the performances of ARQ-aided TSTD systems may be significantly improved by applying the proposed antenna switching schemes, especially when the mobiles speed is low.

著者

• Hwang Seung-hoon

  Dept. Of Electronic Engineering Dongguk University

• JEON Cha-Eul

  Dept. of Electronics Engineering, Dongguk University-Seoul

関連論文

• Antenna Switching Schemes for Downlink Time Switched Transmit Diversity with ARQ in Rayleigh Fading Channels
• ARQ-Aided Downlink Time Switched Transmit Diversity with Power Ramping in the WCDMA LCR-TDD System
• Energy Detector Using a Hybrid Threshold in Cognitive Radio Systems
• Antenna Switching Schemes for Downlink Time Switched Transmit Diversity with ARQ in Rayleigh Fading Channels
• Joint Optimization of Power Allocation and Detection Ordering for Closed-Loop OSIC System(Wireless Communication Technologies)

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