System-level performance of LTE-Advanced with joint transmission and dynamic point selection schemes

Helka-Liina Määttänen, Kari Hämäläinen, Juha Venäläinen, Karol Schober, Mihai Enescu, Mikko Valkama

Research output: Contribution to journalArticleScientificpeer-review

38 Citations (Scopus)
186 Downloads (Pure)

Abstract

In this article, we present a practical coordinated multipoint (CoMP) system for LTE-Advanced. In this CoMP system, cooperation is enabled for cell-edge users via dynamic switching between the normal single-cell operation and CoMP. We first formulate a general CoMP system model of several CoMP schemes. We then investigate a practical finite-rate feedback design that simultaneously supports interference coordination, joint transmission (JT), and dynamic point selection (DPS) with a varying number of cooperating transmission points while operating a single-cell transmission as a fallback mode. We provide both link-level and system-level results for the evaluation of different feedback options for general CoMP operation. The results show that there are substantial performance gains in cell-edge throughputs for both JT and DPS CoMP over the baseline Release 10 LTE-Advanced with practical feedback options. We also show that CoMP can enable improved mobility management in real networks.
Original languageEnglish
Article number247
Pages (from-to)1-18
JournalEurasip Journal on Advances in Signal Processing
Volume2012
DOIs
Publication statusPublished - 2012
MoE publication typeA1 Journal article-refereed

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