IEEE Transactions on Consumer Electronics
Institute of Electrical and Electronics Engineers
Place of Publication
In this work we explore flexible modulations toallow demodulation using receivers with different complexityand cost. More specifically, we study pulse-based ultrawideband (UWB) communications over channels with densemultipath effects using frequency shift keying (FSK) datamodulation. Our aim is to explore the performance tradeoffsbetween high and low complexity receivers. For this purposewe determine the performance of coherent, non-coherent andmismatched (e.g., non-coherent detection using templatesconsisting of a single path) demodulators. We take intoaccount the influence of the frequency response of the antennasystem and the effects of the frequency selectivity of themultipath channel. Given a specific channel condition, wederive expressions for the bit error rate for coherent, noncoherentand mismatched reception of correlated FSK signalswith unequal energies, and calculate the signal-to-noise ratio(SNR) degradation for different receiver's complexities with agiven FSK frequency deviation We show that UWB-FSK has aSNR degradation similar to other low-complexity receiversstudied in the literature.
UWB, FSK, multipath channels
Engineering | Signal Processing | Systems and Communications
Todor Cooklev, Fernando Ramirez-Mireles, and G. A. Paredes-Orozco (2010).
UWB-FSK: Performance Tradeoffs for High and Low Complexity Receivers. IEEE Transactions on Consumer Electronics.56 (4), 2123-2131. United States: Institute of Electrical and Electronics Engineers.