Analysis of the CFO Successive Interference Cancellation for the OFDMA Uplink

FERNANDO H. GREGORIO; COUSSEAU, JUAN E.; GONZÁLEZ, GUSTAVO J.; C. H. MURAVCHIK

WIRELESS PERSONAL COMMUNICATIONS

SPRINGER

Lugar: Berlin; Año: 2016 vol. 91 p. 989 - 1002

0929-6212

Abstract The uplink of orthogonal frequency division multiple access or single-carrierfrequency division multiple access suffers multiple access interference when carrier frequencyoffset (CFO) is not properly estimated and compensated. In particular, multicarrieruplink CFO compensation is highly complex due to the multiuser context. Successiveinterference cancellation algorithms are effectively employed to compensate for the CFO,where the interference produced by each user is handled sequentially through a series ofiterations. The main contribution of this work is the analysis of the CFO compensationperformance of 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 for the space-alternatinggeneralized expectation-maximization algorithm in the CFO compensation scenario.Finally, we validate the analysis with numerical simulations.