The difference between the same frequency and different frequency of the wireless module

Many wireless modules are two-way transmissions. Some people who have just entered this industry may not understand the difference between the same frequency and different frequencies. In the following, this article will work with you to understand the difference between them.

The so-called same frequency for sending and receiving means that the receiving frequency and the transmitting frequency can be the same, and the different frequency means that the receiving frequency and the transmitting frequency are different.

In the data acquisition and control system, the same frequency mode only requires one frequency, and the different frequency mode requires two frequencies. For a system composed of a master station and multiple slave stations, the transmission from the master station to the slave station is called uplink, and the transmission from the slave station to the master station is called uplink. In the same frequency mode, the uplink frequency is the same as the downlink frequency. In the inter-frequency system, one frequency is used for downlink transmission, and another frequency is used for uplink transmission.

When to use the same frequency and when to use different frequencies?

From the perspective of efficient use of frequency resources and radio management, it is more desirable to adopt the same frequency mode.

From the user's point of view, the inter-frequency mode occupies less processing time, and some systems with heavier processing tasks prefer to adopt the inter-frequency mode. This is because in the same frequency system, any station transmitting, the rest of the stations must process the received data, and the data that needs to be processed by the station will be processed accordingly, rather than discarding the data of the own station.

The downlink transmission and uplink transmission of a full-duplex digital radio station can be carried out at the same time, and the inter-frequency mode must be adopted.

The above is the difference between the same frequency and different frequencies of the wireless module. Through the above description, everyone should have a deeper understanding of the same frequency and different frequencies.

Shenzhen NiceRF Wireless Technology Co., Ltd. specializes in the research and development, production, and sales of wireless modules. The products have the advantages of stable performance, long transmission distance, strong compatibility, and rich varieties. Multiple frequency bands, multiple modulation methods, multiple transmission powers, multiple data interfaces are available to meet most application requirements and can be customized according to customer requirements by OEM/ODM.