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

作者：Jeon Cha Eul^*; Hwang Seung Hoon

来源：IEICE - Transactions on Communications, 2010, E93B(3): 780-783.

DOI：10.1587/transcom.E93.B.780

• time switched transmit diversity
• automatic repeat reQuest
• transmit diversity
• antenna switching

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 scheme,. especially when the mobile's speed is low

• 出版日期2010-3