What is distributed MIMO?
It is a system where the base station antennas are geographically distributed over the cell instead of being co-located in a single array in the cell center. This is one approach of massive MIMO where all the large number of antennas are distributed rather than being placed in a single array.
What is a valid type of MIMO?
There are two primary types of MIMO: single-user (SU) and multiuser (MU). In SU-MIMO systems, data streams can only interact with one device on the network at a time. MU-MIMO systems, therefore, outperform SU-MIMO. Issues arise with SU-MIMO when many users attempt to use the network simultaneously.
What is Virtual MIMO?
Abstract: The growing interest in wireless sensor network which is battery operated, demands an energy efficient network with maximum lifetime. To solve this problem a new architectural technique developed known as Virtual MIMO.
When was MIMO introduced?
Two researchers: Arogyaswami Paulraj and Thomas Kailath were first to propose the use of spatial multiplexing using MIMO in 1993 and in the following year their US patent was granted. However it fell to Bell Labs to be the first to demonstrate a laboratory prototype of spatial multiplexing in 1998.
How does MIMO work?
An acronym for Multiple-In, Multiple-Out, MIMO communication sends the same data as several signals simultaneously through multiple antennas, while still utilizing a single radio channel. This is a form of antenna diversity, which uses multiple antennas to improve signal quality and strength of an RF link.
What is point to MIMO?
Conventional MIMO systems, known as point-to-point MIMO or collocated MIMO, require both the transmitter and receiver of a communication link to be equipped with multiple antennas.
What MIMO cellular?
Multiple-input and multiple-output, or MIMO, is one of the key technologies that allows 4G LTE and 5G to deliver high speeds. In short, it’s a method used by 4G LTE and 5G signals to multiply the capacity of a connection, by using multiple antennas to send and receive signal.
What is MIMO in wireless communication?
Multiple-Input Multiple-Output (MIMO) is a wireless technology that uses multiple transmitters and receivers to transfer more data at the same time. All wireless products with 802.11n support MIMO. The technology helps allow 802.11n to reach higher speeds than products without 802.11n.
Who invented MIMO?
Arogyaswami Paulraj pioneered MIMO—Multiple Input, Multiple Output—a wireless technology that has revolutionized broadband wireless internet access for billions of people worldwide.
How is MIMO channel capacity calculated?
Equation 5 expresses the capacity of the MIMO channel as the sum of the capacities of r SISO channels, each having power gain λi (i = 1,…, r) and transmit power Es/Mt….MIMO CHANNEL MODEL.
|Rr||=||The receive correlation matrix|
|Hi.i.d||=||The uncorrelated channel matrix|
What is MIMO channel capacity?
It is known that the channel capacity in a MIMO communication system depends on the number of transmit and received antennas, the signal-to-noise ratio, the channel state, and the autocorrelation or covariance matrix of the transmitted signal vector .
How is MIMO used in cellular telephony?
MIMO can only work if multiple receivers, transmitters and antennas are installed into each mobile device. In a MIMO-enabled network, a mobile device will send and receive two separate wireless signals instead of one. In a MIMO network, the base station antennas can receive more than one signal.
What is Cooperative MIMO and how does it work?
The basic idea of cooperative MIMO is to group multiple devices into a virtual antenna array to achieve MIMO communications. A cooperative MIMO transmission involves multiple point-to-point radio links, including links within a virtual array and possibly links between different virtual arrays.
What is Distributed MIMO or virtual antenna arrays?
It is also called Network MIMO, Distributed MIMO, Virtual MIMO, and Virtual Antenna Arrays. Conventional MIMO systems, known as point-to-point MIMO or collocated MIMO, require both the transmitter and receiver of a communication link to be equipped with multiple antennas.
What are the different types of MIMO systems?
It is also called network MIMO, distributed MIMO, virtual MIMO, and virtual antenna arrays . Conventional MIMO systems, known as point-to-point MIMO or collocated MIMO, require both the transmitter and receiver of a communication link to be equipped with multiple antennas.
What is cooperative multiple-input multiple-output (Cooperative MIMO)?
In radio, Cooperative multiple-input multiple-output (Cooperative MIMO, CO-MIMO) is an advanced technology that can effectively exploit the spatial domain of mobile fading channels to bring significant performance improvements to wireless communication systems.