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Volume 31 Issue 1
Dec.  2010
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Zhong Zhi-meng, Ren Pin-yi, Zhu Shi-hua, Lü Gang-ming. The Channel Capacity and Resource Allocation Scheme for Distributed Alamouti Space-Time Code[J]. Journal of Electronics & Information Technology, 2009, 31(1): 27-31. doi: 10.3724/SP.J.1146.2007.00997
Citation: Zhong Zhi-meng, Ren Pin-yi, Zhu Shi-hua, Lü Gang-ming. The Channel Capacity and Resource Allocation Scheme for Distributed Alamouti Space-Time Code[J]. Journal of Electronics & Information Technology, 2009, 31(1): 27-31. doi: 10.3724/SP.J.1146.2007.00997

The Channel Capacity and Resource Allocation Scheme for Distributed Alamouti Space-Time Code

doi: 10.3724/SP.J.1146.2007.00997
  • Received Date: 2007-06-18
  • Rev Recd Date: 2007-11-05
  • Publish Date: 2009-01-19
  • In this paper, the channel capacity and the optimal resource allocation scheme for Distributed Alamouti Space-Time Code based on Decode-and-Forward (DF-DASTC) protocol are investigated. Using the degraded relay channel model, the channel capacity of DF-DASTC under fading channels is derived. To maximize the capacity of DF-DASTC, the closed-formed analytical expression of the optimal power allocation scheme with fixed bandwidth allocation is derived for DF-DASTC. Based on the convex optimization theory, the multi-objective optimization issue to maximize the capacity of DF-DASTC is converted into the general single objective optimization problem, and the optimal resource allocation scheme with variable bandwidth allocation is derived. Both theoretical analysis and simulations show that the resource allocation scheme can significantly increase the channel capacity of DF-DASTC. Moreover, the resource allocation scheme is a generalized method, which can be used in wireless relay networks with multiple relay nodes.
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