A spectral built-in self test (BIST) solution for integrated cellular RF transmitters is presented that enables on-chip verification of PLL spectral performance. Multi-tone FM test signals with a spurious-free dynamic range (SFDR) of 60 dB are generated without compromising the performance of the RF transmitter itself. The RF signal is demodulated and digitized in an on-chip digital FM discrimi...

This work is motivated by our earlier study which shows that on explicit pitch normalization the children’s speech recognition performance on the adults’ speech trained models improves as a result of reduction in the pitch-dependent distortions in the spectral envelope. In this paper, we study the role of spectral smoothing in context of children’s speech recognition. The spectral smoothing has...

This paper presents a novel signal trajectory based noise compensation algorithm for robust speech recognition. Its performance is evaluated on the Aurora 2 database. The algorithm consists of two processing stages: 1) noise spectrum is estimated using trajectory autosegmentation and clustering, so that spectral subtraction can be performed to roughly estimate the clean speech trajectories; 2) ...

This paper presents an investigation on the performance of the Non-Orthogonal Multiple Access (NOMA) in the power domain scheme. A Power Allocation (PA) method is proposed from NOMA throughput expression analysis. This method aims to provide fair opportunities for users to improve their performance. Thus, NOMA users can achieve rates higher than, or equal to, the rates obtained with the convent...

Different industries are usually faced with computer color matching as an important problem. The most famous formula which is commonly used for recipe prediction is based on Kubelka-Munk K-M theory. Considering that spectrophotometer’s geometry and its situation influence the measured spectral values, the performance of this method can be affected by the instrument. In the present study, three ...