What does "Single-Input Single-Output" mean?

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Single-Input Single-Output, or SISO, is a basic method used in communication systems. In this setup, there is one input signal and one output signal. It's a straightforward way to send and receive information.

In SISO systems, a single antenna is used to transmit data, and one antenna is used to receive it. This is in contrast to more complex setups that use multiple antennas for sending and receiving, known as Multiple-Input Multiple-Output (MIMO).

SISO systems are often easier to manage and implement because they require less equipment and simpler technology. They are commonly used in various applications, including wireless communication and radio systems.

While SISO may not provide the same level of performance as more advanced techniques, it remains a key concept in understanding how data is transmitted over communication channels.