| Popis: |
In the past decades, increasing demand for wireless multimedia and interactive Internet services, along with rapid proliferation of a multitude of communications and computational gadgets, are fuelling intensive research efforts on the design of novel wireless communication systems architectures for high speed, reliable and cost effective transmission solutions. Cooperative relay communication is a new paradigm shift for the next generation wireless system that will guarantee high data rates to all users in the network. It is anticipated to be the key technology aspect in the fifth generation wireless networks. In this Paper, we use system level simulations to gain insight into and quantify the influence of channel state information feedback delay in a multi-cell cooperative wireless system, and focus is put in relay selection and resource allocation for its optimal use. We analyzed the interplay between scheduling, power control in a multi-cell environment when the channel state information is subject to feedback delay. Detailed analysis is carried out using MATLAB and subsequent results are thoroughly discussed for deeper insight into the dynamics of cooperative networks. General Terms OFDMA, Cooperative relay selection, resource allocation, LTE. |
