MIMO AF RSs Based OSTBCs for LTE-A Downlink Physical Layer Network

The link performance between base station (BS) and user equipment (UE) in long term evolution-advanced (LTE-A) system is already quite close to the Shannon limits and from a pure link-budget perspective, the highest data rates supported by LTE-A require a relatively high signal-to-noise ratio. In la...

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Bibliographic Details
Published in:Wireless personal communications 2017-08, Vol.95 (3), p.2931-2946
Main Authors: El-Mashed, Mohamed G., El-Rabaie, S.
Format: Article
Language:English
Subjects:
Amplification
Block codes
Communications Engineering
Computer Communication Networks
Engineering
Error analysis
Mobile communication systems
Networks
Radio equipment
Relay
Relay stations
Relaying
Signal to noise ratio
Signal,Image and Speech Processing
Wireless communications
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Summary:The link performance between base station (BS) and user equipment (UE) in long term evolution-advanced (LTE-A) system is already quite close to the Shannon limits and from a pure link-budget perspective, the highest data rates supported by LTE-A require a relatively high signal-to-noise ratio. In later releases of LTE-A, various tools such as relaying, enhancing the support for low-power BSs and improving the link budget are included. This paper studies the relay stations (RSs) for LTE-A downlink physical layer. Multi-input multi-output amplify-and-forward RS is used to enhance the received signal of UEs at cell edge. This paper proposes RSs with orthogonal space–time block codes (OSTBC) transmission for LTE-A system. The received signals for different UEs scenarios are mathematically derived and analyzed. The symbol error rate performance of proposed LTE-A system is illustrated for the scenarios of UEs. Results show that the proposed LTE-A system based RSs with OSTBC transmission improve link performance and achieve higher diversity gains.
ISSN:0929-6212
1572-834X
DOI:10.1007/s11277-017-3972-2