Simple non‐coherent detection scheme for IEEE 802.15.4 BPSK receivers
Gaoyuan Zhang, Dan Wang, Liang Song, Honghai Wu, Ping Xie, Baofeng Ji, Wen Q. Hong · Electronics Letters · 2017
A novel, non‐coherent bit‐level detection scheme is proposed to compensate for the frequency offset efficiently in IEEE 802.15.4 binary phase shift keying (BPSK) receivers. In the proposed scheme, the frequency‐offset estimation process only requires comparison, division, and addition operations. The proposed scheme first creates a suitable estimation‐region division, thus the mathematical approximation tan −1 ( x ) ≈ x is efficiently utilised to simplify the conventional optimal estimation. The frequency offset and signal‐to‐noise ratio conditions do not need a priori knowledge. Simulations demonstrate that the proposed scheme is as reliable as the conventional optimal algorithm, but with a significant reduction of complexity.