By a News Reporter-Staff News Editor at Journal of Technology -- Data detailed on Antennas and Propagation have been presented. According to news reporting out of Islamabad, Pakistan, by VerticalNews editors, research stated, "This paper compares the capacity improvement capability of spatial multiplexing and beamforming techniques for 60 GHz spatial transmissions in a multi-carrier radio system such as orthogonal frequency division multiplexing. The term beamforming in this paper refers to the conventional gain focusing, for the strongest propagation path, by narrow antenna beams."
Our news journalists obtained a quote from the research from the COMSATS Institute of Information Technology, "Our channel capacity metric depends only on the multipath richness of the propagation channel and the antenna aperture size, but is otherwise independent of the realization of antenna elements on the aperture. Our analysis also reveals the spatial degrees-of-freedom (SDoF) of the radio channel, which is the maximum number of antenna elements on the aperture for efficient spatial multiplexing. We evaluate the capacity and SDoF of single-polarized 60 GHz radio channels measured in an office environment. Our results show that the radio channel offers multiple SDoFs both in line-of-sight (LOS) and non-LOS (NLOS) scenarios such that spatial multiplexing can improve the channel capacity, provided that the receive signal-to-noise ratio (SNR) is sufficiently high to utilize them."
According to the news editors, the research concluded: "Under 10 dBm of the transmit power, the high receive SNR is guaranteed when the antenna aperture size is larger than in LOS and in NLOS scenarios, respectively."
For more information on this research see: 60 GHz Spatial Radio Transmission: Multiplexing or Beamforming? IEEE Transactions on Antennas and Propagation, 2013;61(11):5735-5743. IEEE Transactions on Antennas and Propagation can be contacted at: Ieee-Inst Electrical Electronics Engineers Inc, 445 Hoes Lane, Piscataway, NJ 08855-4141, USA. (Institute of Electrical and Electronics Engineers - www.ieee.org/; IEEE Transactions on Antennas and Propagation - ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=8)
Our news journalists report that additional information may be obtained by contacting K. Haneda, COMSATS Inst Informat Technol, Dept. of Elect Engn, Islamabad, Pakistan. Additional authors for this research include C. Gustafson and S. Wyne.
Keywords for this news article include: Asia, Pakistan, Islamabad, Antennas and Propagation
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