Open Science Research Excellence

Shihab Abdel Hameed

Publications

2

Publications

2
8504
Signal Generator Circuit Carrying Information as Embedded Features from Multi-Transducer Signals
Abstract:
A novel circuit for generating a signal embedded with features about data from three sensors is presented. This suggested circuit is making use of a resistance-to-time converter employing a bridge amplifier, an integrator and a comparator. The second resistive sensor (Rz) is transformed into duty cycle. Another bridge with varying resistor, (Ry) in the feedback of an OP AMP is added in series to change the amplitude of the resulting signal in a proportional relationship while keeping the same frequency and duty cycle representing proportional changes in resistors Rx and Rz already mentioned. The resultant output signal carries three types of information embedded as variations of its frequency, duty cycle and amplitude.
Keywords:
Integrator, Comparator, Bridge Circuit, Resistanceto-Time Converter, Conditioning Circuit.
1
13226
Characterization of Indoor Power Lines as Data Communication Channels Experimental Details and Results
Abstract:

In this paper, a multi-branch power line is modeled using ABCD matrix to show its worth as a communication channel. The model is simulated using MATLAB in an effort to investigate the effects of multiple loading, multipath, and those as a result of load mismatching. The channel transfer function is obtained and investigated using different cable lengths, and different number of bridge taps under given loading conditions.

Keywords:
Power line Communication, Transfer Function, Channel Modeling, Signal Transmission.