What is mutual coupling in MIMO antenna?

What is mutual coupling in MIMO antenna?

The mutual coupling between the two antenna elements in a MIMO system is related to the current direction that flows on the surface of the antennas. If the current flows in the same direction on the adjacent sides of both the antennas, the mutual coupling increases.

What is channel capacity and how it is going effect the MIMO channel?

1 Introduction. Multiple-input multiple-output (MIMO) systems employ multiple transmit and receive antennas to improve the channel capacity and data rates using multiplexing, without increasing the transmit power or bandwidth 1, 2.

How does MIMO increase capacity?

MIMO uses at least 2 — sometimes several — antennas on the transmit (Tx) side and on the receive (Rx) side to transmit a single channel. This approach increases data rates and spectral efficiency. The techniques used in MIMO increase capacity linearly with the number of antennas.

What is the advantages of MIMO?

By enabling spatial channelization and diversity, MIMO expands bandwidth available within a given spectral bandwidth and space. There are three MIMO transmission techniques, and each offers an opportunity to selectively and adaptively optimize the space and bandwidth already in use.

What do you mean by MIMO channel capacity?

The maximum error-free data rate that a channel can support is called the channel capacity. The channel capacity for additive white Gaussian noise (AWGN) channels was first derived by Claude Shannon in 1948. [1]. MIMO channels exhibit fading, encompass a spatial dimension, and are very different from AWGN channels.

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.