## FANDOM

186 Pages

Single-Input and Single-Output (SISO) is a part of MIMO systems with one transmit antenna and one receive antenna, while MIMO can have more than one transmit antennas and more than one receive antennas.

## System Model Edit

In wireless cellular networks, the received signal in SISO is given by

$y_k = P_k h_k x_k + n_k$

where $P_k$ is the transmit power, $h_k$ is the scalar fading wireless channel, $x_k$ is the scalar transmit signal, and $n_k$ is the scalar noise signal.

## Ergodic Capacity Edit

The ergodic capacity of the SISO system is given by

$C = \log_2(1 + P_k |h_k|^2)$

which is achievable throughput without knowing full instantaneous channel state information.