Impulse Radio Systems with Multiple Types of Ultra-Wideband Pulses
<|reference_start|>Impulse Radio Systems with Multiple Types of Ultra-Wideband Pulses: Spectral properties and performance of multi-pulse impulse radio ultra-wideband systems with pulse-based polarity randomization are analyzed. Instead of a single type of pulse transmitted in each frame, multiple types of pulses are considered, which is shown to reduce the effects of multiple-access interference. First, the spectral properties of a multi-pulse impulse radio system is investigated. It is shown that the power spectral density is the average of spectral contents of different pulse shapes. Then, approximate closed-form expressions for bit error probability of a multi-pulse impulse radio system are derived for RAKE receivers in asynchronous multiuser environments. The theoretical and simulation results indicate that impulse radio systems that are more robust against multiple-access interference than a "classical" impulse radio system can be designed with multiple types of ultra-wideband pulses.<|reference_end|>
@article{gezici2005impulse,
    title={Impulse Radio Systems with Multiple Types of Ultra-Wideband Pulses},
    author={Sinan Gezici, Zafer Sahinoglu, Hisashi Kobayashi, and H. Vincent Poor},
    journal={arXiv preprint arXiv:cs/0502083},
    year={2005},
    archivePrefix={arXiv},
    eprint={cs/0502083},
    primaryClass={cs.IT math.IT}
}