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A scheme of direction-of-arrival (DoA) estimation is proposed based on 2D-ESPRIT algorithm with multiple combinations of subarrays. The pairs of elevation and azimuth angles are obtained by applying the standard 2D-ESPRIT algorithm to three combinations of two set-of-subarrays in a 7-element hexagonal array. The pairs obtained from one of three combinations are permuted according to the descending...
A simple DoA estimator is proposed with a switched beam antenna. The estimator is implemented with an adjacent pattern power ratio algorithm. For a single source signal, the received signal powers are measured while the antenna switches over a set of measured directive beam patterns. The pattern that exhibits the maximum received signal power is chosen. Then, the ratio between the pattern adjacent...
Hamiltonian algorithm with momentum attenuation is proposed for adaptive beamforming of ESPAR antenna. Hamiltonian algorithm is a good tool for nonlinear optimizations, and intends to meet the two conflicting requirements to being deterministic and to being free from local minima in the non-linear optimization. The proposed algorithm is an extension of Hamiltonian algorithm by introducing the momentum...
An adjacent pattern power ratio algorithm is proposed for DoA estimation with a switched beam antenna. For a single source signal, the received signal powers are measured while the antenna switches over a set of directive beam patterns. The pattern that exhibits the maximum received signal power is chosen. Then, the ratio between the pattern adjacent to the chose pattern and the chose pattern, is...
The frame splitting (FS) for the downlink transmission from a base station (BS) with distributed antennas to a mobile station is studied. A data frame from the BS is split into two portions that are transmitted consecutively from the distributed antennas. For uncoded transmission, the bit error rate (BER) is formulated as a function of the FS ratios, and an analytical optimal FS ratios is derived...
In this paper we investigate HA for optimization with signal possessing. We describe HA, and explain its feature for nonlinear optimization. We employ HA as a tool to solve optimization problem such as an adaptive beamforming for Espar antenna.
The frame-splitting (FS) for the downlink transmission from a base station (BS) that has distributed antennas to a mobile station is studied. A data frame from the BS is split into two portions that are transmitted consecutively from the distributed antennas. The bit error rate (BER) is formulated as a function of the FS ratios. Based on this analytical model, the closed-form solution of the optimal...
An enhanced reactance-domain estimation of signal parameters via rotational invariance techniques (RD-ESPRIT) algorithm is proposed for direction-of-arrival (DoA) estimation in the full-azimuth plane. Unlike the classical RD-ESPRIT algorithm, the proposed method employs a generalized RD correlation matrix combined with soft selection. The proposed algorithm is expected to allow estimating more than...
Multi-phase cooperative communication in a wireless network is studied in this paper. Each node is a mobile module having multiple antennas (MA) or a group of sensors forming a virtual antenna array (VAA). The scenario comprises a number of multiple-input multiple-output (MIMO) channels with mutually independent Rayleigh fading processes. A data frame from a signal source node is split into portions...
The performance of a multi-phase cooperative communication is studied in a wireless network. Each node is a mobile module having multiple antennas (MA) or a group of sensors forming a virtual antenna array (VAA). The scenario comprises a number of multiple-input multiple-output (MIMO) channels with mutually independent Rayleigh fading processes. A data frame from a signal source node is split into...
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