Journal of Electrical and Computer Engineering

Research Letter

Combining Coded Signals with Arbitrary Modulations in Orthogonal Relay Channels

Table 1

Equivalent channel parameters for the linear combiners.
ℎ e q 𝜎 2 e q
MRC 𝑎 0 𝜎 2 0 + 𝑎 1 𝜎 2 1 𝑎 0 𝜎 2 0 + 𝑎 1 𝜎 2 1
MMSE 𝑎 0 𝜎 2 0 + 𝑎 1 𝜌 2 1 𝜎 2 1 + 𝑎 1 𝑃 0 ( 𝛼 2 1 − 𝜌 2 1 ) 𝑎 0 𝜎 2 0 + 𝑎 1 𝜌 2 1 𝜎 2 1 + 𝑎 1 𝑃 0 ( 𝛼 2 1 − 𝜌 2 1 )
C-MRC 𝑎 0 + m i n { 𝛾 1 , 𝛾 1 } 𝛾 1 𝑎 1 𝑎 0 𝜎 2 0 + m i n { 𝛾 1 , 𝛾 1 } 𝛾 1 𝑎 1 𝜎 2 1