A new mechanism for using Analysis-by-Synthesis techniques in low rate Waveform Interpolation based coders is introduced. The algorithm, implemented as part of a Multi-Prototype Waveform coder, exploits the high quality speech produced by interpolating unquantised speech-domain Prototype Waveforms. In the new scheme, a frame of Prototype Waveforms is quantised using two sets of codebook searche...

Cognitive radar is a new framework of radar system proposed by Simon Haykin recently. Adaptive waveform selection is an important problem of intelligent transmitter in cognitive radar. In this paper, the problem of adaptive waveform selection is modeled as stochastic dynamic programming model. Then backward dynamic programming, temporal difference learning and Q-learning are used to solve this ...

In radar systems, many researchers focused on the waveform design to improve the performance. And many algorithms just only consider the energy of the transmitted waveform. However, in practice, only the energy constraint is insufficient to guarantee that the signal will satisfy common envelope requirements, such as constant modulus that is important to radar transmitter. In this paper, we prop...

Laser range data analysis is of high interest in photogrammetry. Range estimation for complex surface structures can be inaccurate. To overcome this drawback a method using a laser scanner capable of full-waveform analysis is proposed. For analysis the transmitted waveform of the emitted pulse is used to estimate the received waveform of the backscattered pulse for a known surface. We simulated...

Acoustic waveform tomography is applied to a 2D synthetic dataset from Saudi Aramco to test if we will be able to obtain an accurate and highly resolved velocity tomogram. Source and receiver locations are not located along a flat surface so we assume a surface topography from the source and receiver locations. The initial velocity model was obtained using traveltime tomography and the source w...

Full waveform recording is becoming increasingly affordable and, consequently, available in today's state-of-the-art LiDAR systems. Therefore, there is no practical limitation to the complexity of pulse detection and other methods that can be applied in post-processing mode. Analyzing the entire return signal, the full waveform can provide additional geometrical and physical information about t...

In this paper we describe our experiences with parallel implementations of several di erent waveform algorithms for performing transient simulation of semiconductor devices. Because of their inherent computation and communication structure, waveform methods are well suited to MIMD-type parallel machines having a high communication latency | such as a cluster of workstations. Experimental result...

Since radios are becoming ever more sophisticated, we consider a waveform-agile scenario where the transmitting radio may be instructed to vary its waveform or signature in response to interference conditions. Using classical Karhunen-Loeve methods, we derive the optimal waveform for a single user under given interference and then and provide an iterative distributed algorithm which results in ...

This paper proposes a ramp dual-pulse actuation-voltage waveform that reduces actuation-voltage shift in capacitive microelectromechanical system (MEMS) switches. The proposed waveform as well as two reported waveforms (dual pulse, and novel dual-pulse) are analyzed using equivalent-circuit and equation models. Based on the analysis outcome, the paper provides a clear understanding of trapped c...

In intelligent radar, it is an important problem for the transmitted waveform to adapt to the environment in which radar works. In this paper, we propose mutual information model of adaptive waveform design, which can convert the problem of adaptive waveform design into the problem of optimization. We consider two situations of no clutter and clutter and use Newton method and interior point met...