Title :
Optimal joint power allocation and sub-carrier pairing in amplify-and-forward SC-FDMA relaying networks
Author :
Karimi, Alireza ; Sabbaghian, M.
Author_Institution :
Sch. of Electr. & Comput. Eng., Univ. of Tehran, Tehran, Iran
Abstract :
Optimal power allocation (PA) and sub-carrier pairing (SP) strategies for a dual-hop amplify-and-forward single-carrier frequency division multiple access network are derived. Frequency domain equalisers based on minimum mean square error (MMSE) and zero forcing (ZF) criteria are considered. For each equaliser, the problem of joint PA and SP is solved to maximise the system capacity subject to the total network power constraint. The optimality of ordered SP (OSP) and reverse OSP scenarios for MMSE and ZF equalisers, respectively, is proved.
Keywords :
amplify and forward communication; equalisers; frequency division multiple access; least mean squares methods; MMSE; SC-FDMA network; ZF criteria; ZF equalisers; amplify-and-forward SC-FDMA relaying networks; dual-hop amplify-and-forward; equaliser scheme; frequency domain equaliser schemes; minimum mean square error; optimal joint power allocation; optimality of ordered SP; reverse OSP; scheme; single-carrier frequency division multiple access; subcarrier pairing; subcarrier pairing strategies; system capacity subject; zero forcing;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2014.2256
