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The Cellular Alamouti Technique

  • Simon Plass
  • Ronald Raulefs
Conference paper
Part of the Lecture Notes Electrical Engineering book series (LNEE, volume 1)

Abstract

This paper handles a transmit diversity technique to provide adequate performances at the cell border in a next generation cellular downlink of a mobile communications system. The used technique is based on the Alamouti scheme, and therefore, we call the scheme cellular Alamouti technique (CAT). The CAT is exemplarily applied to an orthogonal frequency division multiplexing access (OFDMA) which is a promising candidate for future communications systems. For improving the performance at the cell borders, the CAT exploits resource management to apply the Alamouti technique and to avoid inter-cellular interference using both adjacent base stations to transmit the desired signal. The influence of the CAT to a cellular OFDMA system is investigated for different resource management strategies. Simulation results show a significant performance improvement at the cell border by using CAT. The performance depends on the resource allocations of the chosen sub-carriers. Nevertheless, CAT is even robust to high-speed scenarios. Furthermore, investigations regarding the system throughput with different modulation alphabets offer a reliable and flexible adaptation to different mobile terminal requests.

Keywords

Channel State Information Mobile Terminal Cell Border OFDM Symbol Radio Resource Management 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer 2007

Authors and Affiliations

  • Simon Plass
    • 1
  • Ronald Raulefs
    • 1
  1. 1.German Aerospace Center (DLR)Institute of Communications and Navigation OberpfaffenhofenWesslingGermany

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