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OFDM systems in the presence of phase noise: consequences and solutions

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2 Author(s)
Songping Wu ; Electron. & Comput. Eng. Dept., New Jersey Inst. of Technol., Newark, NJ, USA ; Y. Bar-Ness

We provide an exact analysis of orthogonal frequency-division multiplexing (OFDM) performance in the presence of phase noise. Unlike most methods which assume small phase noise, we examine the general case for any phase noise levels. After deriving a closed-form expression for the signal-to-noise-plus-interference ratio (SINR), we exhibit the effects of phase noise by precisely expressing the OFDM system performance as a function of its critical parameters. This helps in understanding the meaning of small phase noise and how it reflects on the proper parameters selection of a specific OFDM system. In order to combat phase noise, we also provide in this paper a general phase-noise suppression scheme, which, by analytical and numerical results, proves to be quite effective in practice.

Published in:

IEEE Transactions on Communications  (Volume:52 ,  Issue: 11 )