The facility enables individuals access Wi-Fi while sitting in classrooms, campus or at hostel rooms 24x7 free of cost. The facility is expected to benefit research scholars and students. Through Wi-Fi, students can access UoM's digital library which has over 5,000 books.
The university's information and communication division (ICD) has introduced wireless network (Wi-Fi) in the 80-acre campus through a 100-foot tower. Carrier-class wave using multi-input and multi-output technology (MIMO) drives the project.
Explaining the project to TOI, G Hemanth Kumar, professor and chairman, department of studies in computer sciences, said the Wi-Fi project has been funded under Institution of Excellence Scheme by University Grants Commission and the installation has cost Rs 64 lakh.
UoM vice-chancellor V G Talawar approved the idea of varsity going Wi-Fi. Mourya Infotech Pvt Ltd (Bangalore) will provide free maintenance for three years.
MIMO will provide free maintenance for three years, and BSNL and a private internet provider will give internet service he added. Students have been allowed to avail Wi-Fi service even in classroom for academic purpose.
Multiple-Input Multiple-Output (MIMO) technology is a wireless technology that uses multiple transmitters and receivers to transfer more data at the same time (Figure 1). Wireless products with 802.11n support MIMO. This is part of the technology that allows 802.11n to reach much higher speeds than products without 802.11n.
MIMO technology takes advantage of a radio-wave phenomenon called multipath where transmitted information bounces off walls, ceilings, and other objects, reaching the receiving antenna multiple times via different angles and at slightly different times. Multipath is a natural occurrence for all radio sources. Radio signals bounce off objects and move at different speeds towards the receiver. In the past multipath caused interference and slowed down wireless signals. MIMO takes advantage of multipath to combine the information from multiple signals improving both speed and data integrity.
MIMO technology leverages multipath behavior by using multiple, “smart” transmitters and receivers with an added “spatial” dimension to dramatically increase performance and range. MIMO allows multiple antennas to send and receive multiple spatial streams at the same time. Smart transmitters and receivers are used with all 802.11n devices. Using multiple antennas the data can be sent and received through multiple signals. More antennas usually equates to higher speeds. A wireless adapter with 3 antennas may have a speed of 600mbps while an adapter with 2 antennas has a speed of 300mbps. The router also needs to have multiple antennas and fully support all of the features of 802.11n to gain the highest speed possible.
MIMO makes antennas work smarter by enabling them to combine data streams arriving from different paths and at different times to effectively increase receiver signal-capturing power. Smart antennas use spatial diversity technology, which puts surplus antennas to good use. If there are more antennas than spatial streams, the additional antennas can add receiver diversity and increase range.
In order to implement MIMO, either the station (mobile device) or the access point (AP) need to support MIMO. Optimal performance and range can only be obtained when both the station and the AP support MIMO.
Legacy wireless devices can’t take advantage of
multipath because they use a Single Input, Single Output (SISO) technology.
Systems that use SISO can only send or receive a single spatial stream at one
time.
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