Basic Technical Principles of MIMO

Since 802.11n, MIMO technology has been used in this protocol and has significantly improved the wireless transmission rate. Specifically, how to achieve high technology improvement. Now let’s take a closer look at MIMO technology.

With the progress of wireless communication technology, more protocols are born. In order to improve the information transmission rate and bandwidth utilization, multi-antenna technology is applied. This is called Mimo. From Shannon’s formula’s point of view, Mimo technology can speed up the rate at which data is sent, which in turn improves the signal-to-noise ratio.

In a broad sense, MIMO refers to a space division multiplexing mode that supports multi-layer transmission of data streams at the same time. However, sometimes the concept of MIMO is different because of the content. For instance, when we talk about 5G, we talk about massive MIMO, which is a term for beam-forming technology.

The column sub describes the basic principle of MIMO;

First, we assume that there are two data streams, A and B, which are transmitted simultaneously. These two data streams are sent separately by two antennas. At this time, the two data streams must send data to pass through the wireless channel system and reach two antennas simultaneously to receive signals. The receiving end processes the two data streams for digital signals and recovers the data of the two streams independently. It should be noted that at the sending end, the RF end of the two signals uses the same frequency band when modulating. For example, in the case of 5G 100M, the two signals use 100M bandwidth. Just increase the number of antennas.

The above is the knowledge explanation of MIMO Basic Technical Principles brought by Shenzhen Haidiwei Optoelectronic Technology Co., Ltd., a manufacturer of optical communication equipment. Welcome to contact us.