Sparse linear arrays provide better performance than the filled linear arrays in terms of angle estimation and resolution with reduced size and low cost. However, they are subject to manifold ambiguity. In this paper, both the transmit array and receive array are sparse linear arrays in the bistatic MIMO radar. Firstly, we present an ESPRIT-MUSIC method in which ESPRIT algorithm is used to obta...

It is known that the spatial correlation between the desired signal and the undesired signals is an important parameter in adaptive array processing. In this paper, we consider the adaptive antenna of mobile communications under space-time adaptive processing (STAP), where user signals are of multipath rays with different delays, and the space-time correlation functions are employed instead of ...

A computationally efficient global optimization method, the adaptive particle swarm optimization (APSO), is proposed for the synthesis of uniform and Gaussian amplitude arrays of two cases, i.e., the prior constraint in the synthesis of the element positions for both the cases is dmin = 0.5 λ, where dmin is the minimum distance between two adjacent elements. The upper limit in the distance betw...

We present a simple beam switching scheme to increase the downlink capacity of the UMTS FDD-mode. At the base station this method only needs an additional transceiver chain, i.e. a separate one for each beam, a beamforming network and a uniform linear array. The mobiles need no changes at all. We analyze the performance of our method by means of system level simulations. We found an increase in...

It is well-known that the sensor characteristics and their physical arrangement place fundamental limitations on the ultimate capabilities of an array system. In this paper, the design of linear arrays, tailored to the so-called direction-finding (DF) algorithms, is considered. The proposed design approach is superresolution based on the differential geometry of the . The novel concept of a is ...

Pneumotachograph require frequent calibration. Constant-flow methods allow polynomial calibration curves to be derived but are time consuming. The iterative syringe stroke technique is moderately efficient but results in discontinuous conductance arrays. This study investigated the derivation of first-, second-, and third-order polynomial calibration curves from 6 to 50 strokes of a calibration...

Metallic nanoscale voids can support both localized and propagating plasmons and form plasmonic crystals. However, constructing 1D arrays is crucial for producing plasmonic circuits. In this paper we report the first experimental evidence of plasmons in templated linear arrays of self-assembled structures. Single and multilayer arrays of gold voids have been fabricated by self-assembly of sub-m...

Gradient error can be compensated by optimizing switching sequences of DAC arrays. This paper establishes an absolute lower bound of integral nonlinearity (INL) which may be achieved by optimizing switching sequences. Optimal switching sequences that meet this lower bound are presented for one-dimensional linear gradient error compensation in unary (thermometer decoded) DAC arrays. The sequence...

Interleaving codewords is an important method not only for combatting burst-errors, but also for flexible data-retrieving. This paper defines the Multi-Cluster Interleaving (MCI) problem, an interleaving problem for parallel data-retrieving. The MCI problems on linear arrays and rings are studied. The following problem is solved: how to interleave integers on a linear array or ring such that an...

This paper presents several time-optimal, and spacetime-optimal systolic arrays for computing a process dependence graph corresponding to the mixed-radix conversion algorithm. The arrays are particularly suitable for software implementations of algrithms from the applications of residue number systems on a programmable systolic/wavefront array. Examples of such applications are exact solution o...