Energy-Efficient Cooperative Relaying over Fading Channels with Simple Relay Selection

    •  Madan, R., Mehta, N.B., Molisch, A.F., Zhang, J., "Energy-Efficient Cooperative Relaying over Fading Channels with Simple Relay Selection", IEEE Global Telecommunications Conference (GLOBECOM), November 2006.
      BibTeX TR2006-075 PDF
      • @inproceedings{Madan2006nov,
      • author = {Madan, R. and Mehta, N.B. and Molisch, A.F. and Zhang, J.},
      • title = {Energy-Efficient Cooperative Relaying over Fading Channels with Simple Relay Selection},
      • booktitle = {IEEE Global Telecommunications Conference (GLOBECOM)},
      • year = 2006,
      • month = nov,
      • url = {}
      • }
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We consider a cooperative wireless network where the source broadcasts data to relays, some or all of which cooperatively beamform to forward the data to the destination. The network is subject to an overall outage constraint. We generalize the standard approaches for cooperative communications in two respects: (i) we explicitly model and factor in the cost of acquiring channel state information (CSI), and (ii) we consider more general, yet simple, selection rules for the relays and compute the optimal one among them. These rules include as special cases several relay selection criteria proposed in the literature. We present analytical results for the homogeneous case, where the links have identical mean channel gains. For this case, we show that the optimal transmission scheme is simple and can be computed efficiently. Numerical results show that while the cost of training and feedback of CSI is significant, relay cooperation is still beneficial.


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    •  NEWS   GLOBECOM 2006: 4 publications by Jinyun Zhang and others
      Date: November 27, 2006
      Where: IEEE Global Telecommunications Conference (GLOBECOM)
      MERL Contact: Jinyun Zhang
      • The papers "Energy-Efficient Cooperative Relaying over Fading Channels with Simple Relay Selection" by Madan, R., Mehta, N.B., Molisch, A.F. and Zhang, J., "Progressive Accumulative Routing in Wireless Networks" by Yim, R., Mehta, N., Molisch, A.F. and Zhang, J., "WLC41-6: Cooperative Relay Networks Using Fountain Codes" by Molisch, A.F., Mehta, N.B., Yedidia, J.S. and Zhang, J. and "WEC11-2: Propagation Channel Characteristics for Peer-to-Peer Multiple Antenna Systems at 300 MHz" by Eriksson, G., Tufvesson, F. and Molisch, A.F. were presented at the IEEE Global Telecommunications Conference (GLOBECOM).