TR2006-092

Cooperative Relay Networks Using Fountain Codes


    •  Molisch, A.F., Mehta, N.B., Yedidia, J.S., Zhang, J., "Cooperative Relay Networks Using Fountain Codes", IEEE Global Telecommunications Conference (GLOBECOM), November 2006, pp. 1-6.
      BibTeX TR2006-092 PDF
      • @inproceedings{Molisch2006nov1,
      • author = {Molisch, A.F. and Mehta, N.B. and Yedidia, J.S. and Zhang, J.},
      • title = {Cooperative Relay Networks Using Fountain Codes},
      • booktitle = {IEEE Global Telecommunications Conference (GLOBECOM)},
      • year = 2006,
      • pages = {1--6},
      • month = nov,
      • url = {https://www.merl.com/publications/TR2006-092}
      • }
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  • Research Area:

    Communications

TR Image
Pdf of transmission energy for N = 10, L = 2 and 5, γ = λ = 10.
Abstract:

We investigate a cooperative communications scheme with N parallel relays, where both the transmissions from the source to the relays and from the relays to the destination use fountain codes. Receiver for codes can accumulate mutual information, while traditional energy collection methods, such as repetition or cooperative space-time codes, only accumulate energy. As a consequence, using fountain codes can reduce the total energy required for transmitting data from the source to the destination. We first analyze the scenario where the source stops transmitting and the relay nodes start transmitting after L relay nodes have successfully decoded the source data. We optimize L, and also give closed-form equations for the energy savings that can be achieved by the use of mutual-information-collection at the receiver instead of the traditional energy-collection methods. We then analyze an alternate scenario where each relay node starts its transmission to the destination as soon as it has decoded the source data, and helps the other relay nodes that are still in reception mode. Doing so further reduces the total transmission time and energy consumption.

 

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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
      Brief
      • 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).
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