By a News Reporter-Staff News Editor at Telecommunications Weekly -- Research findings on Wireless Communications and Networks are discussed in a new report. According to news reporting from Notre Dame, Indiana, by VerticalNews journalists, research stated, "We consider the downlink of a wireless cellular network where the base stations are equipped with multiple antennas and operate in the same frequency band. Since scheduling changes the spatial transmit signal processing with each time slot, information from neighboring base stations is required for data encoding."
The news correspondents obtained a quote from the research from the University of Notre Dame, "This can, in theory, be accomplished by a high-capacity backhaul network through which the base stations exchange channel state information (CSI) and other control signals. In reality, however, the temporal granularity of the scheduler does not allow for timely distribution of CSI among base stations. We propose a two-phase scheduler which optimizes the precoding in the first phase and allows the users to feed back their instantaneous interference power in the second phase. For the single-user case, we present a practical scheme that combines two-phase scheduling with precoders that maximize the signal-to-leakage-plus-noise ratio. If the users feed back the interference power together with a supported rate, communication between base stations can be limited to integers."
According to the news reporters, the research concluded: "By comparing the performance to multi-user two-phase scheduling with dirty paper coding and to algorithms that share CSI among base stations we show that two-phase scheduling is a technically and practically feasible solution to deal with non-stationary intercell interference."
For more information on this research see: Two-Phase Scheduling and Leakage-Based Precoding in Wireless Cellular Networks. IEEE Transactions on Wireless Communications, 2013;12(7):3148-3157. IEEE Transactions on Wireless Communications 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 Wireless Communications - ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=7693)
Our news journalists report that additional information may be obtained by contacting R. Bendlin, University of Notre Dame, Dept. of Elect Engn, Notre Dame, IN 46556, United States. Additional authors for this research include H.H. Brunner, M.T. Ivrlac, J.A. Nossek and Y.F. Huang.
Keywords for this news article include: Indiana, Notre Dame, United States, Cellular Network, North and Central America, Wireless Communications and Networks
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