Limiting frequency-modulation spectra

The Limiting Spectra of Girko’s Block-matrix

To analyze the limiting spectral distribution of some random blockmatrices, Girko [7] uses a system of canonical equations from [6]. In this paper, we use the method of moments to give an integral form for the almost sure limiting spectral distribution of such matrices.

Limiting set of second order spectra

Let M be a self-adjoint operator acting on a Hilbert space H. A complex number z is in the second order spectrum of M relative to a finite dimensional subspace L ⊂ DomM, iff the truncation to L of (M − z) is not invertible. This definition was first introduced in [4] and according to the results of [7] and [13], these set provide a method for estimating eigenvalues free from the problems of spe...

S-band Frequency Spectra

This paper presents a novel design of a microstrip patch antenna with compact nature and the study of various antenna parameters to suit the applications such as WiMax operating in the frequency range of 3.3 – 3.5 GHz and in other applications like fixed satellite services, maritime mobile services etc. covering 2 4 GHz of S-band frequency spectra. It is experimental observed that by placing st...

A Generalization of Modulation Spectra

Limiting performance of frequency-hop random access

The multiple-access capability of asynchronous frequencyhop packet radio networks is analyzed. The only interference considered is multiple-access interference, and perfect side information is assumed. Bounds are developed on the probability of error for unslotted systems based on the distributions of the maximum and minimum interference levels over the duration of a given packet, and these are...