Novel Power Control Algorithm for the Distributed Antenna Wireless Communication Systems
Guo Shu-ming · Journal of Information Engineering University · 2011
A power control algorithm for the downlink of a distributed antenna wireless communication system is proposed by the use of the average channel gain matrix.On the basis of channel state information(CSI) the receiver obtains by the ideal channel estimation,the algorithm allocates the transmit power of the BS via optical fiber to each antenna at a weight relative to the channel gain between antennas and mobile stations to minimize the transmit power of every BS under the condition that the SIR of all the mobile stations in the coverage area are balanced.Simulation results show that compared with the existing power control algorithm in distributed antenna systems,the new algorithm can significantly reduce the transmit power of the central base stations and improve the overall system capacity.