A modified bit and power allocation algorithm for MIMO relay system
一种改进的MIMO中继系统中比特与功率分配算法

Bit and power allocation is an important issue of adaptive resource allocation in MIMO-OFDM system. In this paper, an improved algorithm, bits and power allocation algorithm based on water-filling theorem, is proposed and used to the single-user MIMO amplify and forward relay system. The algorithm which adopts the method of bisection to search water-filling line can reduce the number of literations with low complexity compared with the traditional water-filling algorithm. Simulation results show that system capacity and bit error rate performance can be improved effectively.