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.

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