Ultra-wideband multicarrier communication receiver based on analog to digital conversion in the frequency domain

In the UWB multicarrier receiver, after analog to digital conversion (ADC), the samples of the spectrum of the received signal are used in the digital receiver to estimate the transmitted symbols through a matched filter operation in the discrete frequency domain. The proposed receiver is aimed at the reception of high information rates in a multicarrier signal with very large bandwidth. Thus, the receiver architecture provides a solution to some of the challenging problems found in the implementation of conventional wideband multicarrier receivers based on time-domain ADC, since it parallelizes the A/D conversion, reducing the sampling rate. The receiver is also directly applicable to multicarrier ultra-wideband communication receivers. Additional advantages of the proposed receiver include the possibility of optimally allocating the available number of bits for the A/D conversion across the frequency domain samples, narrowband interference suppression that can be directly carried out in the frequency domain, and inherent robustness to frequency offset which makes it an attractive solution when compared with traditional multicarrier receivers.