Analysis of the CFO successive interference cancellation for the OFDMA uplink

G. GONZÁLEZ; F. GREGORIO; J.E. COUSSEAU; C.H. MURAVCHIK

WIRELESS PERSONAL COMMUNICATIONS

SPRINGER

Lugar: Berlin; Año: 2016

0929-6212

The uplink of orthogonal frequency division multiple access (OFDMA)or single-carrier frequency division multiple access (SC-FDMA) suffers multipleaccess interference when carrier frequency offset (CFO) is not properly estimatedand compensated. In particular, multicarrier uplink CFO compensation is highlycomplex due to the multiuser context. Successive interference cancellation algorithmsare effectively employed to compensate for the CFO, where the interferenceproduced by each user is handled sequentially through a series of iterations. Themain contribution of this work is the analysis of the CFO compensation performanceof efficient successive cancellation algorithms. We study the mean squaresymbol error, and derive a useful upper-bound of the compensation technique performanceat convergence. This result extends the general convergence results forthe space-alternating generalized expectation-maximization algorithm in the CFOcompensation scenario. Finally, we validate the analysis with numerical simulations.