Angle-of-Departure-Aided Opportunistic Space-Division Multiple Access

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceeding

Abstract

In this paper, a novel transmission technique for the multiple-input multiple-output (MIMO) broadcasting directional channels is introduced. During the training period, the base station sends a set of mutually orthogonal signals which enables each user to estimate the angle-of-departure of the anticipated strongest beam and the corresponding SNR. Then, the base station uses the reported angles-of-departure and SNRs to select a subgroup of users for data transmission in such a way that the sum capacity is maximized. Compared to the opportunistic space-division multiple access with beam selection algorithm, the advantage of the proposed algorithm is that it provides throughput gains up to 95% with low to medium number of users, under the same number of feedback bits. In addition to our new proposed algorithm, we introduce a modified version of the opportunistic space-division multiple access with beam selection algorithm, which shows a significant throughput improvement when evaluated using directional channel models such as WINNER.

Details

Authors
  • Ghassan Dahman
  • Roshdy Hafez
External organisations
  • External Organization - Unknown
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Electrical Engineering, Electronic Engineering, Information Engineering

Keywords

  • Angle-of-departure (AOD) estimation, beamforming, space-division multiple access (SDMA).
Original languageEnglish
Title of host publication[Host publication title missing]
Pages146-152
Number of pages7
StatePublished - 2009
Publication categoryResearch
Peer-reviewedYes
Externally publishedYes
EventCommunication Networks and Services Research Conference, 2009. CNSR '09. Seventh Annual - Moncton, NB, Canada
Duration: 2009 May 11 → …

Conference

ConferenceCommunication Networks and Services Research Conference, 2009. CNSR '09. Seventh Annual
CountryCanada
CityMoncton, NB
Period2009/05/11 → …