TR2009-087

Relay Selection and Data Transmission Throughput Tradeoff in Cooperative Systems


    •  Shah, V., Mehta, N.B., Yim, M.H.R., "Relay Selection and Data Transmission Throughput Tradeoff in Cooperative Systems", IEEE Global Telecommunications Conference (GLOBECOM), November 2009, pp. 1-6.
      BibTeX TR2009-087 PDF
      • @inproceedings{Shah2009nov,
      • author = {Shah, V. and Mehta, N.B. and Yim, M.H.R.},
      • title = {Relay Selection and Data Transmission Throughput Tradeoff in Cooperative Systems},
      • booktitle = {IEEE Global Telecommunications Conference (GLOBECOM)},
      • year = 2009,
      • pages = {1--6},
      • month = nov,
      • issn = {1930-529X},
      • url = {https://www.merl.com/publications/TR2009-087}
      • }
  • Research Area:

    Communications

Abstract:

A common and practical paradigm in cooperative communications is the use of a dynamically selected 'best' relay to decode and forward information from a source to a destination. Such a system consists of two core phases: relay selection phase, in which the system expends resources to select the best relay, and a data transmission phase, in which it uses the selected relay to forward data to the destination. In this paper, we study and optimize the trade-off between the selection and data transmission phase durations. We derive closed-form expressions for the overall throughput of a non-adaptive system that includes the selection phase overhead, and then optimize the selection and data transmission phase durations. Corresponding results are also derived for an adaptive system in which the relays can vary their transmission rates. Our results show that the optimal selection phase overhead can be significant even for fast selection algorithms. Furthermore, the optimal selection phase duration depends on the number of relays and whether adaptation is used.

 

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      Brief
      • The papers "Relay Selection and Data Transmission Throughput Tradeoff in Cooperative Systems" by Shah, V., Mehta, N.B. and Yim, M.H.R., "Medium Access Control Signaling for Reliable Spectrum Agile Radios" by Azarnasab, E., Chen, R.-R., Teo, K.H., Tao, Z. and Farhang-Boroujeny, B., "Unified Analysis of Linear Block Precoding for Distributed Antenna Systems" by Koike-Akino, T., Molisch, A.F., Tao, Z., Orlik, P.V. and Kuze, T., "Multi-user Cooperative Communications with Relay-Coding for Uplink IMT-Advanced 4G Systems" by Cao, L., Zhang, J. and Kanno, N., "Error Control Strategies for WiMAX Multi-Hop Relay Networks" by Fu, W., Tao, Z., Zhang, J. and Agrawal, D.P., "Opportunistic Cell Edge Selection in Multi-Cell OFDMA Networks" by Au-Yeung, C.K., Maaref, A. and Zhang, J. and "A New Coupling Channel Estimator for Cross-Talk Cancellation at Wireless Relay Stations" by Ma, J., Li, G.Y., Zhang, J., Kuze, T. and Iura, H. were presented at the IEEE Global Telecommunications Conference (GLOBECOM).
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