Understanding the effects of phase noise in orthogonal frequency division multiplexing (OFDM)

Abstract

Abstract-Phase noise must be carefully considered when designing an OFDM-based communication system since an accurate prediction of the tolerable phase noise can allow the system and RF engineers to relax specifications. This paper analyzes the performance of OFDM systems under phase noise and its dependence on the number of sub-carriers both in the presence and absence of a phase correction mechanism. Besides some practical results are provided so as to give some insight into the phase noise spectral specifications that should be required to the local oscillator.

Performance Analysis of OFDM with Wiener Phase Noise and Frequency Selective Fading Channel

“…Frequency offset and phase noise are two of the major deterrents to the amount of capacity a communication system can achieve [15,39,41,56] and, hence, the development of efficient and low complexity signal processing algorithms is crucial to mitigate their effect [32,33,53], especially given cost constraints. Frequency offset and phase noise create the same effect on the signal with the fundamental difference being that frequency offset is deterministic while phase noise is random.…”

“…For example, in two port devices, the phase noise PSD cannot be steeper than 1/f [47]. Although, the exponents [15]. Although, the PSD of the phase noise is crucial to understanding its effect on communication systems, it is the PSD of the oscillator output that is generally used as a measure of its spectral purity.…”

“…In [15], Armada discusses how high phase noise levels can be tolerated if proper phase noise correction schemes are employed. The phase noise model is described by passing white…”

Design and Performance Analysisof OFDM-based Single mode and Multimode Optical Fiber Communication System

“…OFDM provides more resistance to frequency selective fading as compared to a single carrier transmission system.OFDM [8] finds various applications in digital television and audio broadcasting and 4G mobile communication etc. OFDM is introduced in optical communication system to support high speed data transmission over both single mode and multimode fibers and it overcomes both linear and non-linear impairments in optical fiber communication [3]. OFDM is computationally efficient as it makes use of Fast Fourier Transform(FFT) techniques for various modulation and demodulation functions implementation.The processing at high data rates in optical is feasible due to advancement in digital signal processing [2].…”

Joint Channel and Phase Noise Compensation for OFDM in Fast-Fading Multipath Applications

“…In a previous work of one of the authors of this paper [15], a block equalization of the phase noise on the whole OFDM symbol is proposed, leading to a better performance than a percarrier equalization scheme. Again, the channel is considered ideally estimated.…”