Multi-rate receiver design with IF sampling and digital timing correction

This contribution deals with a fully digital multirate radio receiver suitable for vehicular applications. Timing correction and sample rate conversion are performed by a polynomial interpolator. Three different receiver configurations are considered in terms of computational complexity and BER performance. Careful selection of the intermediate frequency turns out to play a crucial role. System parameters are provided yielding good BER performance for all considered symbol rates. Results are verified by computation of the BER degradation as compared to an analog receiver with synchronized symbol-rate sampling.