A Coherent Detection-based Symbol Detector algorithm for 2.45GHz LR-WPAN receiver

In IEEE 802.15.4 LR-WPAN(Low-Rate Wireless Personal Area Network) specification, the frequency offset of 80 ppm on 2.45 GHz band is recommended for low-cost implementation. For robustness to the specified frequency offset, non-coherent detection-based symbol detector algorithm is typically applied in the LR-WPAN receiver modem. However, the noncoherent symbol detector has more performance degradation by squaring loss of I/Q squaring operation than the coherent detector. In this paper, we propose a coherent detection- based symbol detector algorithm with frequency offset compensation that has better performance and lower complexity than the noncoherent detector algorithm without additional complexity due to the frequency offset compensation.