Signal Design and Coding for High-Bandwidth OFDM in Car-to-Car Communication

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The authors analyze mobile propagation channels which occur in the context of car-to-car communications in the 24 GHz ISM band. From the information gathered, they design robust frame designs for combined radar and communication systems using high-bandwidth OFDM signals. Two solutions are proposed: the combination of a spread spectrum technique and a standard convolutional encoder, as well as a low rate Reed-Muller code. They can show that while both perform well enough for the channels analyzed, the Reed-Muller code has some advantages for the RF system, but achieves lower data rates.