Effect of Carrier Frequency Offset and Phase Noise on WFMT Systems
نویسنده
چکیده
This paper presents an analysis of the effect of the carrier frequency offset and phase noise on a performance of Wavelet based Filtered Multi-Tone (WFMT) systems for a general AWGN channel. It is well known that the carrier frequency offset in OFDM System yields to significant degradation of the signal-tonoise ratio (SNR). Below I show that a novel WFMT modulation is less sensitive to the frequency offset and phase noise in communication channel than OFDM /DMT modulation. The simple expression for SNR degradation in WFMT Systems is developed on base of preceding papers, those examine the carrier frequency offset effect on OFDM performance. The better performance of WFMT system versus OFDM is illustrated by calculation of SNR degradation in OFDM and WFMT systems with the same bandwidth and number of FFT points.
منابع مشابه
Joint Effect Analysis of Phase Noise, Carrier Frequency Offset, Doppler Spread and Nonlinear Amplifier on the Performance of OFDM System
In this paper, we provide an exact closed-form expression of the effective signal-to-noise ratio (SNR) for orthogonal frequency division multiplexing (OFDM) performance under the combined effect of phase noise, frequency offset, and amplifier nonlinearities of the soft envelope limiter (SEL). This formula describes explicitly the various parameters with the system performance. After deriving th...
متن کاملOFDM System under the Combined Effect Analysis of the Phase Noise, Carrier Frequency Offset, Doppler Spread, and Amplifier Nonlinearity of the SEL
In this paper, we provide an exact closed-form expression of the effective signal-to-noise ratio (SNR) for orthogonal frequency division multiplexing (OFDM) performance under the combined effect of the phase noise, frequency offset, and amplifier nonlinearities of the soft envelope limiter (SEL). A simplified approximate expression is also obtained for the effective SNR under certain conditions...
متن کاملPerformance Evaluation of an Ofdm System under the Influence of Phase Noise and Carrier Frequency Offset
The two most important parameters to be considered while designing an OFDM based communication system are phase noise and carrier frequency offset (CFO). It has been observed that the OFDM systems are very sensitive to phase noise and CFO, and an accurate prediction of the tolerable values of these parameters can help the system to relax the specifications. This paper analyses the performance o...
متن کاملDesign of robust carrier tracking systems in high dynamic and high noise conditions, with emphasis on neuro-fuzzy controller
The robust carrier tracking is defined as the ability of a receiver to determine the phase and frequency of the input carrier signal in unusual conditions such as signal loss, input signal fading, high receiver dynamic, or other destructive effects of propagation. An implementation of tight tracking can be understood in terms of adopting a very narrow loop bandwidth that contradict with the req...
متن کاملEffect of frequency offset on BER of OFDM and single carrier systems
,Ali.sir,tciI'erformance o f bath orthogonal frequency division multiplexing (OFDM) and single carrier (SC) systems suffers Iron) a carrier frequency offset (CFO) due to Doppler effect iind the ciwrier instability between the transmitter and the receiver. \'e investigate the bi t ermr rate @ER) performance degradation of OFDhl and SC systems due to the frequency offset in a n additive white Gau...
متن کامل