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Table 1 Symbol introduction

From: Robust resource allocation for cognitive relay networks with multiple primary users

Symbol

Specification

\(h_{SR_{k}}^{i}\)

Channel gain of the i th subcarrier transmitted on S R k link

\(h_{R_{k}D}^{i}\)

Channel gain of the i th subcarrier transmitted on R k D link

\(P_{SR_{k}}^{i}\)

Transmit power of the i th subcarrier transmitted on S R k link

\(P_{R_{k}D}^{i}\)

Transmit power of the i th subcarrier transmitted on R k D link

\(h_{SP_{l}}^{i}\)

Channel gain of the i th subcarrier transmitted from S to the l th

 

PU-RX (S P l link)

\(h_{R_{k}P_{l}}^{i}\)

Channel gain of the i th subcarrier transmitted from R k to the

 

l th PU-RX (R k P l link)

\(\sigma _{ik}^{2}\)

Noise power of the i th subcarrier transmitted on S R k link

\(\sigma _{iD}^{2}\)

Noise power of the i th subcarrier transmitted on R k D link

\(J_{ik}^{l}\)

Interference power to the i th subcarrier transmitted on S R k

 

link caused by the l th PU-TX

\(J_{iD}^{l}\)

Interference power to the i th subcarrier transmitted on R k D

 

link caused by the l th PU-TX