Abstract
The design of power efficient receivers for Bluetooth systems is a challenging task due to stringent complexity constraints. We tackle this problem and present a novel receiver consisting of a single filter and a subsequent sequence detector. This receiver outperforms the conventional discriminator detector by more than 4 dB for typical Bluetooth channels. Thereby, the proposed sequence detection (SD) algorithm is of favorable low complexity, as it operates on a two-state trellis, and is highly robust against channel phase variations caused by low-cost local oscillators. Different from previously published work on SD, we take possible variations of the Bluetooth modulation parameters into account. Hence, the presented receiver design is an attractive solution for practical Bluetooth devices.
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