Asymmetry balancing for channel asymmetry support in OFDMA-TDD cellular networks

Ellina Foutekova*, Sinan Sinanović, Harald Haas

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)


This paper proposes a novel approach to interference avoidance via inter-cell relaying in cellular OFDMA-TDD (orthogonal frequency division multiple access - time division duplex) systems. The proposed scheme, termed asymmetry balancing, is targeted towards next-generation cellular wireless systems which are envisaged to have ad hoc and multi-hop capabilities. Asymmetry balancing resolves the detrimental base station (BS)-to-BS interference problem inherent to TDD networks by synchronizing the TDD switching points (SPs) across cells. In order to maintain the flexibility of TDD in serving the asymmetry demands of individual cells, inter-cell relaying is employed. It is demonstrated that asymmetry balancing offers great flexibility in uplink (UL)- downlink (DL) resource allocation. In addition, results show that a spectral efficiency improvement of more than 100% can be obtained with respect to a case where the TDD SPs are adapted to the cell-specific demands.

Original languageEnglish
Title of host publication2008 IEEE 68th Vehicular Technology Conference
Publication statusPublished - 24 Oct 2008
Externally publishedYes
Event2008 IEEE 68th Vehicular Technology Conference - Calgary, Canada
Duration: 21 Sept 200824 Sept 2008 (Link to conference website)

Publication series

NameIEEE Vehicular Technology Conference
ISSN (Print)1550-2252


Conference2008 IEEE 68th Vehicular Technology Conference
Abbreviated titleVTC2008-Fall
Internet address

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics


Dive into the research topics of 'Asymmetry balancing for channel asymmetry support in OFDMA-TDD cellular networks'. Together they form a unique fingerprint.

Cite this