Implementation of an adaptive control system of the power transmitted through the estimated SNR, over SDR platform

In this article, was implemented an adaptive control system of the power transmitted through the estimation of the SNR of the channel on the Software Defined Radio platform and we use the USRP N210 Ettus Research equipment. For the estimation of the channel SNR we use the second and fourth moment M
₂
M
₄
algorithm for the QPSK digital modulation. This system will contribute to the development of adaptive transmission techniques in wireless sensor networks and thus achieve energy efficient systems.