Energy Aware Link Adaption for MIMO-OFDM Systems

Energy efficiency is becoming increasingly important for small form factor mobile devices, as battery technology has not kept up with the growing requirements stemming from ubiquitous multimedia applications. In contrast to the existing waterfilling power allocation schemes that maximize throughput subject to a fixed overall transmit power constraint ,our scheme maximizes energy efficiency by adapting both overall transmit power and its allocation, according to the channel states and the circuit power consumed Realistic link level simulations confirm that the proposed solution achieves significant improvement over existing link adaptation algorithms when the aim is to maximize the throughput, and provides orders of magnitude gain in energy efficiency compared to poorly chosen fixed modes when used for energy efficiency maximization purposes .In this paper we, present an energy aware link adaptation as well as transmit search path algorithm for complexity algorithm