Title :
Resource Allocation for Cooperative LTE-Advanced Uplink
Author :
Karimi, Alireza ; Sabbaghian, M.
Author_Institution :
Sch. of Electr. & Comput. Eng., Univ. of Tehran, Tehran, Iran
Abstract :
In this paper, we develop joint power allocation, sub-carrier pairing and relay selection strategies to maximize the capacity of single carrier frequency division multiple access (SC-FDMA) systems. The problem is investigated in the framework of a dual-hop amplify-and-forward network where power allocation is performed only in the relay node. In this work, we prove the optimality of ordered sub-carrier pairing (OSP) and reverse OSP (ROSP) for receivers with frequency domain equalizers based on minimum mean square error (MMSE) and zero forcing (ZF), respectively. We obtain significant improvement by the proposed joint resource allocation strategies.
Keywords :
Long Term Evolution; amplify and forward communication; cooperative communication; equalisers; frequency division multiple access; least mean squares methods; radio receivers; relay networks (telecommunication); resource allocation; MMSE; SC-FDMA systems; cooperative LTE-advanced uplink; dual-hop amplify-and-forward network; frequency domain equalizers; minimum mean square error; ordered sub-carrier pairing; power allocation; relay node; relay selection; resource allocation; reverse OSP; single carrier frequency division multiple access; Equalizers; Frequency-domain analysis; Joints; Peak to average power ratio; Receivers; Relays; Resource management; SC-FDMA; relaying; sub-carrier pairing;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2014.2353637
