activation and deactivation of radio transceiver, data transmission and reception are the tasks that is done by the physical layer. There are different physical layers. The choice of physical layer depends on the applications. The different physical layers are: Narrow Band (NB), Human Body Communication (HBC) and Ultra Wide Band (UWB). NB physical layer is used for the activation or deactivation of the radio transceiver and data transmission and reception. The PSDU (Physical Layer Service Data…
2 OFDM SYSTEM:- OFDM system is divided into three parts 1. multi carrier modulation 2. frequency division multiplexing 3. Orthogonal frequency division multiplexing. 1.Frequency division multiplexing:- Frequency Division Multiplexing is a form of signal multiplexing which involves assigning non – overlapping frequency ranges or channels to different signals or to each user of a medium. A gap is left between each of these channels to ensure that the signal of one channel does not overlap with…
How to Drive Stick Shift for Beginners Driving stick shift is a process of various shifting. If you are use to driving an automatic vehicle, meaning you use the automatic transmission that uses the symbols P, R, N, D, 2, and L. which are P for parking, R for reverse, N for neutral, D for drive or third, two for second, and L for low or third. It might be a little difficult for you to adapt to the new things you will need to do to make you car go faster. You will have to make more movement when…
1762-IF4 is an Allen Bradley MicroLogix 1200 System with 4 Channel Current/Voltage Analog Input Module. It has a dimension of 90 x 87 x 40.4 mm. It has Delta-Sigma converter and 4 differential (bipolar) inputs. It’s analog operating voltage range is -10 – 10 V DC normal and -10.5 – 10.5 V DC full scale. It’s analog operating current range is 4 – 20 mA normal and -21 – 21 mA full scale. It converts the analog input up to the full-scale range. It enhances the functionality of MicroLogix 1200…
sent one after another and there are no gaps in transmission. Maintaining the timing is essential because there is no start and stop bits and no gaps. The accuracy is depending on the receiver to keep an accurate count of the bits as the come in. The clock is embedded in the data stream encoding. The sender and the receiver provides a separate clock lines so that the sender and the receiver are always in synchronization during a frame transmission. The synchronous signaling pulses on one signal…
A full-size, technologically advanced SUV points to an upcoming Volkswagen product. Make no mistake about it: the Volkswagen T-Prime Concept GTE SUV currently on display at an auto show in China is giving the world a strong indication of an upcoming Volkswagen product, in particular a full-size SUV. What isn’t known is whether the engineering and high-tech features present in the T-Prime Concept will carry over to the production model. What seems assured is that we’ll find an overall design…
communication, they are always striving to increase throughput, this would include allowing nodes to transmit information over a single broadcast link without interfering with each other. To achieve this, multiple access protocols coordinate the transmission. The three classes of multiple access protocols are, random access, taking-turns and channel partitioning. With random access protocol, each node tries to randomly to use the complete broadcast link, without any regard to the other nodes. …
What can be done when it comes to mowing large lawns? The best and easier thing to do when it comes to maintenance, is to have a riding lawn mower. Are you wondering why you should have this sort of machine? If so, then you should make yourself comfortable and have a look at the following advantages of using a riding lawn mower. No more physical effort This is without any doubt, the most important advantage of all. It doesn't matter how big is the space, you will finish the job extremely…
Don’t mess with a physical therapist they get paid to hurt people. When a physical therapist say they are going to massage a muscle, it may not feel like the nice relaxing massage people get at the spa. Massage performed in therapy is to decrease tightness and tone and to improve tissue mobility of a specific muscle that may be very inflamed or the source of joint pain. (Liz Hoobchaak¬) The field of physical therapy requires a therapist to be considerate and understanding of a person’s limits.…
The career that I have chosen for my pathway is physical therapy. I have chosen this career because it means a lot me for many different reasons. A main reason is that I have recently had an injury that changed the way I think about how important physical therapy is to me and how it helped me walk again. This career has made a major impact in my life, and I want to show how important it is to other people. My mentor was Chris Swoope; he is a physical therapist at Augusta Orthopedics and Sports…