New power allocation methods for AF relay assisted OFDM cognitive radio networks with outdated CSI
Keyword(s):
Af Relay
◽
Keyword(s):
2013 ◽
Vol E96.B
(2)
◽
pp. 668-672
Keyword(s):
Keyword(s):
Keyword(s):
Keyword(s):
2018 ◽
Vol 14
(3)
◽
pp. 403-410
◽
Keyword(s):