Wireless communication Projects for Engineering Students.
Wireless communication projects deals with transferring information between one or more point without connecting any cables. To build Wireless communication projects, one must have a basic knowledge on the basis of electromagnetic waves and communication system theory and its implications. Wireless operations permit services, such as long-range communications, that are impossible or impractical to implement with the use of wires. Our concern provides Wireless Communication Projects for engineering students based on requirements with best customer support.
Access Techniques in Wireless Communication Projects:
TDMA (Time Division Multiple Access): Radio spectrum is divided into time slots. Slots are then distributed to users for receiving or transmitting.
SDMA (Space Division Multiple Access): Radiate energy provides services to users with spot beam antenna.
FDMA (Frequency Division Multiple Access): It gives different frequencies for users so that each one uses different frequency band.
CDMA (Code Division Multiple Access): Special code sequence is assigned for each user which makes them use the channel at the same time.
Component of Wireless Communication Projects.
An input which can be a text, voice or television picture is the source. It is then converted into an electrical waveform using the input transducer. Later this is received by transmitter it modifies the base signal for more smooth transmission. Then the communication channel transmits the modified message as output. Channel could be anything from radio link, coaxial cable, wired or fiber optic cable. Receiver which has filter and demodulation devices can eliminate any noise from the received message. The input message can neither be digital or analog. Images and speech comes under analog messages. Conversion of analog to digital and digital to analog faces many problems like noise immunity and signal distortion.
Noise Immunity:If digital date is disturbed by noise parameter it can be easily recovered. In the case of analog even a slight distortion may cause to lose the entire data.
Regenerative Repeater: Bit stream can be transported over long distance by placing this in a path of digital system.
In order to carry wireless communication projects following components are required.
- Input transducer.
- Communication channel.
- Output transducer.
- Noise Immunity.
- Regenerative repeater.
Wireless Communication Projects using WiMAX Technologies.
WiMAX technology is a broadband wireless data communications technology based around the IEE 802.16 standard providing high speed data over a wide area.For providing high speed data networks wimax use two different key technologies. Such as,
- OFDM (Orthogonal Frequency Division Multiplexing).
- MIMO (Multi Input Multi Output).
- Versions of Wimax technologies are 802.16d (802.16-2004) and 802.16e (802.16-2005).
Benefits of using WiMAX Technology in Wireless communication projects.
- Provide wireless high-speed Internet access to home and business subscribers, on metropolitan distances
- BS can handle thousands of subscriber stations (SS)
- Access control prevents collisions
Wimax projects are now combined with the lte in future generation networks, achieving QoS in wimax, combination of wireless and mesh networks, wimax with priority based scheduling etc.
Conversion Methods in Wireless Technologies.
Sampling Theorem: Shannon’s sampling theorem is used for the conversion of analog to digital and vice versa. It can obtain high frequency from signal spectrum.
Quantization Method: Approximate sample value or almost quantized levels are taken in this method. The information can now be changed into digital and it improves the accuracy of digital signals.
Coding Method: This method has two categories they are channel and source code. Channel code removes noise and interference effect. Source code makes quantized signals as binary sequence.
Advantages of wireless communication Projects.
- Conveying information very quickly
- It’s cheaper to install and maintain
- With the help of this organization’s working people done their jobs in anywhere and anytime.
- Emergency situation, by using it’s informing the urgency about that place in perfect manner.
Examples of Wireless Communication Systems.
- Garage Car Opener.
- Paging System.
- Wireless Keyboard and Mouse.
- Codeless Telephone.
- Cellular Telephone System.
- Handheld Walkie Talkies