Outage Probability And Transmitter Power allocation For Nc-based Cooperative Networks over Nakagami-m Fading Channel

Open Access
Author:
Sung, Yi-lin
Graduate Program:
Electrical Engineering
Degree:
Master of Science
Document Type:
Master Thesis
Date of Defense:
September 23, 2013
Committee Members:
  • Aldo W Morales, Thesis Advisor
  • Sedig Salem Agili, Thesis Advisor
Keywords:
  • Bit error rate
  • network coding
  • complementary code-code division multiple access (CC-CDMA)
  • cooperative
  • relay
  • diversity
  • outag
Abstract:
In previous work, we proposed a modi ed network coding (NC) cooperation system based on complementary code (CC)-code division multiple access (CDMA) technique. This technique not only consumes fewer time slots in either synchronous or asynchronous transmission but also alleviates multi-path interference. In that system, a multiplier is used at the base station where the received signal is multiplied with redundant signals coming from the relays, rather than performing a binary sum operation in the media access control (MAC) layer, which is normally used in traditional network coding. In this thesis, a further investigation is carried out in the proposed system in terms of outage probability and transmitter power allocation. Outage probability was obtained by setting some conditions on a modi ed mutual information equation. In addition, using the max-min optimization method, the optimal power allocation was obtained. Simulation results show that the proposed NC-based cooperative system reduces the overall system outage probability and provides a better transmitter power allocation as compared to the traditional cooperative communication system. These results are obtained by using a Nakagami-m fading channel.