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Cooperative transmission strategy for downlink distributed antenna systems over time-varying channel

Khadka, Ashim, Adachi, Koichi, Sun, Sumei, Zhu, Huiling, Wang, Jiangzhou (2015) Cooperative transmission strategy for downlink distributed antenna systems over time-varying channel. In: IEEE Globecom2015,, December 6-10, 2015, San Diego USA.. (doi:10.1109/GLOCOM.2014.7417837) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
http://dx.doi.org/10.1109/GLOCOM.2014.7417837

Abstract

The channel state information (CSI) is used to optimise data transmission in time division duplex (TDD) systems, which is obtained at the time of channel estimation. The actual channel of data transmission at downlink time slot is different from the estimated channel due to channel variation in user movement environment. In this paper the impact of different user mobility on TDD downlink multiuser distributed antenna system is investigated. Based on mobility state information (MSI), an autocorrelation based feedback interval technique is proposed and updates CSI and mitigate the performance degradation imposed by the user speed and transmission delay. Cooperative clusters are formed to maximize sum rate and a channel gain based antenna selection and user clustering based on SINR threshold is applied to reduce computational complexity. Numerical results show that the proposed scheme can provide improved sum rate over the non cooperative system and no MSI knowledge. The proposed technique has good performance for wide range of speed and suitable for future wireless communication systems.

Item Type: Conference or workshop item (Paper)
DOI/Identification number: 10.1109/GLOCOM.2014.7417837
Subjects: T Technology
Divisions: Faculties > Sciences > School of Engineering and Digital Arts > Broadband & Wireless Communications
Depositing User: Tina Thompson
Date Deposited: 04 Jan 2016 12:59 UTC
Last Modified: 29 May 2019 16:50 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/53573 (The current URI for this page, for reference purposes)
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