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Standard 802.11a is created for work in complex infrastructure of premises or urban conditions when signal is transmitted through multipath channels due to multiple reflections. The objective of the present work is to: Design a model of signal reception according to 802.11a standard. Tasks: • Analysis of 802.11a standard • Design a model of signal reception according to 802.11a standard. • Design of program simulation complex, simulation and analysis of results Results of the work are as follows: 1. Analysis of 802.11a technology based on detailed review of information resources. 2. Model of receive path for processing of 802.11a standard signals was based on unified MATLAB SIMULINK libraries. 3. Simulation of receive path for processing of 802.11a standard signals was based on software simulation complex. Analysis of results proves that the provided model is adequate.

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Abstract In a man-made reasoning, which is so called artificial intelligence AI has been effectively utilized in the most recent decades to arranging and allotting the remote system transfer speed. In a wired system, hubs can watch out for the medium to perceive how much data transmission is being utilized by the system. As a matter of fact, this can't be given in the remote systems. Then again, in a remote systems, during correspondence hubs perhaps will utilize the transmission capacity of neighboring hubs as a clever procedure to find the necessary transfer speed . Subsequently, the data transfer capacity utilization of streams and the open assets to a hub are not nearby ideas, other than it being connected to the neighboring hubs in transporter detecting range. Current arrangements don't deliver how to perform affirmation control in such a domain in this way, that the necessary streams in the system don't surpass organize limit. In this examination, correlation among AI applications will be presented with different ways to deal with exhibit how the data transmission is shared between hubs just as the adequacy of using the AI proposed calculation to discover the framework transfer speed. In other words, this research, will present comparison among AI applications with other approaches to demonstrate how the bandwidth is shared between nodes as well as the effectiveness of utilizing the AI proposed algorithm to find the system bandwidth.

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AbstractThe purpose of this study is to investigate the negative effects of Wi-Fi routers in houses on human health. As these devices have become an essential part of daily life, they are widely used for communications and the Internet. No house can do without it. The radiation emitted from these routers causes many symptoms, such as heart diseases, sleep disorders, brain tumors, ear hearing problems, male infertility, etc. This study looked at 15 different symptoms that may be caused by the emitted radiation by the routers. A questionnaire was distributed for a large number of medical doctors working in five major hospitals in the city of Najaf, and another for individuals who have routers in their house and who do not. The results showed that Wi-Fi routers have an effect on human health that does not exceed 30%. Individuals with routers have more symptoms than people without Wi-Fi routers. While females are more affected by routers than others.

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Abstract. Here research portrays the execution as well as activity highlights for a "Phase-Locked Loop" ("PLL") engineering established frequency synthesizer for clock age also, computerized schemes running. From a programmed design, seeing an entry source frequency FREF = 30 MHz, also, the synthesized waveform frequency will be 100 MHz. In the wake of producing the reproduction beside such qualities, one may next alter these values through introducing advanced qualities in the "MATLAB® Command Window", assuming one need to test beside this scheme. This model tells the best way to reproduce a "phase-locked loop (PLL) frequency synthesizer". The scheme duplicates the (fsynFr) source signal frequency using a steady synN/synM, to deliver an integrated wave have a frequency of synFr*synN/synM. A criticism loop keeps up with the synthesized wave frequency on such stage.

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Abstract. A survey was conducted to collect information on possible health risks of cell-phone towers in Najaf Governorate, Iraq. Data were obtained from people living near to cell-phone towers. A questionnaire was used to collect information from 600 people and included 20 potentially unspecified health symptoms. In addition to measuring the power density of nearby sites around the towers within a distance of 100 meters. Results of the data analysis indicated that people who live near mobile phone towers within a range of 50 meters and for a long period of time are exposed to some potential health risks., such as (A decline in general health, Fatigue, Headaches, Muscle pain, Nausea), Females are more exposed to these risks than males. The measurement of power density inside homes was within the safe limit recommended by ICNIRP and Bio initiative Report.

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Abstract With the huge development of communications technologies today, digital finite impulse response (FIR) filters have been widely utilized frameworks, waveform handling, and electronic frameworks implementations. The FIR filters impulse response experiences a sharp and unexpected deviation bringing about poor ghostly qualities in the frequency space of the planned channel. This sharp rot in the impulse response of the FIR digital channel is brought about by the low request of the examined channel set to unpredictable and differing upsides of the digital channel coefficients. In this exploration, a creative procedure was contemplated, tried, and implemented utilizing a digital channel compensator to enlighten the transient impact in the impulse response of a FIR channel. The suggested technique will lightly collect a fragmentary qualities to the FIR filter weights so the sudden regression will be limited beyond expanding the need for the filter. This will upgrade the next otherworldly qualities of the planned FIR digital channel and the perfect spectral components would be accomplished utilizing a more honed spectrum dismissal frequency range. The reproduction software has been employed using MatLab2020 Simulink Tool Box © with LPF fifth as well as tenth request digital filter plan