Communication System using OFDM on a Power Line Channel
نویسنده
چکیده
The efficient communication systems development that use like environment of transmission the net of energy (Power Line Communication) needs a detailed knowledge of the channel's estates, such as the capacity, the noise, the setting of interference and the function of transference, currently the OFDM modulation is utilized in power line communication in information transference application with high debits, due to its robustness against interferences and spectral efficiency. It was with the objective of obtaining the transfer function of the power line that the experiences presented in this report were carried out. Index Terms — Power line communications, orthogonal frequency division multiplexing, digital and analog signal processing, digital communication.
منابع مشابه
Time-Varying Frequency Fading Channel Tracking In OFDM-PLNC System, Using Kalman Filter
Physical-layer network coding (PLNC) has the ability to drastically improve the throughput of multi-source wireless communication systems. In this paper, we focus on the problem of channel tracking in a Decode-and-Forward (DF) OFDM PLNC system. We proposed a Kalman Filter-based algorithm for tracking the frequency/time fading channel in this system. Tracking of the channel is performed in the t...
متن کاملQuadrature Amplitude Modulation All Optical Orthogonal Frequency Division Multiplexing-dense Wavelength Division Multiplexing-optical Wireless Communication System under Different Weather Conditions
This paper proposes an analytical model for evaluating the performance of dense wavelength division multiplexing (DWDM) for all optical orthogonal frequency division multiplexing (AO-OFDM) optical wireless channel. The investigated performance for proposed system is evaluated for the parameters bit error rate (BER) and Q factor .The constellation diagrams, and bit error rate (BER) of the recei...
متن کاملChannel Effect Compensation in OFDM System under Short CP Length Using Adaptive Filter in Wavelet Transform Domain
Channel estimation in communication systems is one of the most important issues that can reduce the error rate of sending and receiving information as much as possible. In this regard, estimation of OFDM-based wireless channels using known sub-carriers as pilot is of particular importance in frequency domain. In this paper, channel estimation under short cyclic prefix (CP) in OFDM system is con...
متن کاملImproved Channel Estimation for DVB-T2 Systems by Utilizing Side Information on OFDM Sparse Channel Estimation
The second generation of digital video broadcasting (DVB-T2) standard utilizes orthogonal frequency division multiplexing (OFDM) system to reduce and to compensate the channel effects by utilizing its estimation. Since wireless channels are inherently sparse, it is possible to utilize sparse representation (SR) methods to estimate the channel. In addition to sparsity feature of the channel, the...
متن کاملChecking the feasibility of power line communication channel with noise using OFDM Technique
We know that research on digital communication has been widely developed in the past few years and offers a high quality of transmission in both the medium guided (wired) & unguided (wireless) communication environment. Coupled the devices with new modulation technique OFDM (Orthogonal Frequency Division Multiplexing) which is known as digital multicarrier communication technique and one of the...
متن کاملUnitary Matrix Frequency Modulated OFDM for Power Line Communications over Impulsive Noise Channels
Power line channel is the time-frequency variant channel with impulsive noise. Therefore, power line communication makes performance degradation due to time-frequency variant and impulsive noise. To overcome performance degradation, we consider the unitary signal constellation scheme and investigate the performance improvement of unitary matrix frequency modulated orthogonal frequencydivision m...
متن کامل