Abstract
The energy efficiency optimization of the binary power control scheme for MIMO-OFDM wireless communication systems is formulated, and then a global optimization solution of power allocation is derived. Furthermore, a new energy efficiency binary power control (EEBPC) algorithm is designed to improve the energy efficiency of MIMO-OFDM wireless communication systems. Simulation results show that the EEBPC algorithm has better energy efficiency and spectrum efficiency than the average power control algorithm in MIMO-OFDM wireless communication systems.
Highlights
It is beyond question that information and communication technology (ICT) industries play a significant role in current global economy
Some parameters of the system model in Figure 1 are configured as follows: the total transmission power of base station is ranged from 0.6 to 1.4 watt (W); considering the Orthogonal Frequency Division Multiplexing (OFDM) scheme used in Multi-Input and Multi-Output (MIMO) wireless communication system, the number of subchannels is ranged from 8 to 128; the additive white Gaussian noise (AWGN) n0 in wireless subchannels is assumed as 0.1 W
The spectrum efficiency of MIMO-OFDM communication system increases with the number of subchannels and the total transmission power of base station
Summary
It is beyond question that information and communication technology (ICT) industries play a significant role in current global economy. In digital mobile communication systems, the traditional transmission power allocation schemes sought to realize the maximization of wireless channel capacity [10,11,12]. The energy efficiency problem in the traditional binary power control scheme of MIMOOFDM wireless communication systems is not considered. A new algorithm is designed to address the energy efficiency power allocation in MIMO-OFDM wireless communication systems. (1) We formulate the energy efficiency problem of the binary power control scheme in MIMO-OFDM wireless communication systems. (2) A global optimization solution of power allocation in MIMO-OFDM wireless communication systems is derived. (3) A new algorithm is designed to realize the energy efficiency binary power control scheme in communication systems.
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