Transmitted-Reference (TR) signaling, in conjunction with an autocorrelation receiver (AcR),
offers a low-complexity alternative to Rake reception in ultrawide bandwidth systems. This …

The proposed spectrum-overlay scenario for ultra-wideband systems brings new technical
challenges that must be considered during the system design. In this scenario, the receiver …

In this paper, a narrowband interference (NBI) mitigation scheme for ultrawide bandwidth
(UWB) signals using multiple receive antennas is examined. The low spatial fading of UWB …

A surface acoustic wave (SAW) correlator that satisfies FCC bandwidth requirements for
ultra-wideband (UWB) operation has been built and tested. The correlator operates within …

A 5-bit 10 Gs/s DAC for Spectral Encoded UWB transmitters is presented. A test counter is
integrated on-chip to facilitate performance measurement. The chip has dimensions of 1.0 …

This paper considers a UWB communication system that uses spectral encoding as both the
multiple access scheme and the interference suppression technique. The main advantage of …

Recent studies have revealed that spectrum congestion is due to the inefficient usage of
spectrum against the availability. Cognitive radio is viewed as an approach for improving the …

We consider a combined time-hop** (TH) and spread-time (ST) multiple-access technique
that uses an internal code. In this method, the duration of each bit is divided into Ns frames …

In this paper, we analyze the performance of a particular class of transmitted-reference
receivers for impulse radio ultrawideband communication systems, which is called chip-time …

In this paper we study and analyze the performance of the RAKE receiver for a typical
ultrawideband (UWB) spectrally-encoded spread-time (ST) CDMA in the presence of …