Performance of downlink comp in LTE under practical constraints

Author

Mondal, Bishwarup ; Visotsky, Eugene ; Thomas, Timothy A. ; Wang, Xiaoyi ; Ghosh, Amitava

Author_Institution

Nokia Siemens Networks, Arlington, IL, USA

fYear

2012

fDate

9-12 Sept. 2012

Firstpage

2049

Lastpage

2054

Abstract

It has been recognized that a primary method of further enhancing the downlink spectral efficiency of LTE Release-10 is to introduce support for coordinated multi-point (CoMP) transmission. This paper investigates the performance improvements due to downlink CoMP within the framework of LTE (specifically LTE Release-11). A realistic estimate of achievable CoMP throughput performance is provided with respect to variations in deployment scenario, amount of feedback information and at different traffic loads. It is observed that the performance gains due to CoMP are limited to cell edge UE (user equipment) throughput improvements of up to 30%. Further, we show that dynamic cell selection can realize most of the CoMP gains with less feedback than joint transmission and it is more robust under practical conditions.

Keywords

Long Term Evolution; feedback; radio links; telecommunication traffic; LTE Release-10; LTE Release-11; cell edge user equipment; coordinated multipoint transmission; downlink CoMP; downlink spectral efficiency; dynamic cell selection; feedback information; traffic loads; Downlink; Frequency selective surfaces; Gain; Joints; MIMO; Throughput; Timing; CoMP; Downlink; LTE; MIMO;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal Indoor and Mobile Radio Communications (PIMRC), 2012 IEEE 23rd International Symposium on

Conference_Location

Sydney, NSW

ISSN

2166-9570

Print_ISBN

978-1-4673-2566-0

Electronic_ISBN

2166-9570

Type

conf

DOI

10.1109/PIMRC.2012.6362691

Filename

6362691