Characteristics of Radiation Noise from an LED Lamp and Its Effect on the BER Performance of an OFDM System for DTTB

The characteristics of radiation noise from an LED lamp and its effect on the bit error rate (BER) performance of an orthogonal frequency-division multiplexing (OFDM) system for digital terrestrial television broadcasting (DTTB) are investigated. The waveform and frequency spectrum of radiation noise from an LED lamp are measured. A sequence of noise pulses is observed, caused by the switching circuit of the LED, and spread over the broadcast band of Japan. The relationship between the radiation noise from the LED lamp and its effect on the BER performance of the OFDM system using 64-quadrature amplitude modulation (64QAM) is evaluated using amplitude probability distribution (APD) measured with various resolution bandwidths. The behavior of the APD of the noise is similar to Gaussian noise when the resolution bandwidth becomes narrow. The BER performance of the OFDM system subjected to the noise of the LED lamp is estimated from the APD results, which agree well with measured results subjected to the LED noise. The characteristics of sequential LED noise are similar to the effect of Gaussian noise on the BER performance of the OFDM system for DTTB. Therefore, the APD measurement is a useful method to estimate the characteristics and effect of noise from an LED lamp on the OFDM system.

[1]  Paul Wallich.  The lightbulb that really is a better idea [Tools & Toys] , 2011, IEEE Spectrum.

[2]  Kenneth S. Vastola,et al.  Threshold Detection in Narrow-Band Non-Gaussian Noise , 1984, IEEE Trans. Commun..

[3]  Shoyama Masahito,et al.  Research on Radiation Noise from the different implementations in SMPS for Portable Electronic Devices , 2012 .

[4]  Inoue Hiroshi,et al.  Measurement of electromagnetic noise radiated from various LED lamps , 2011 .

[5]  Hiroki Ohta,et al.  Effects of Noise Radiation from LED Bulbs on Communications and Broadcasting Services (環境電磁工学) , 2011 .

[6]  Masumoto Kiyoshi,et al.  Efficiency and Switching Noise Analysis for Bridgeless PFC Circuits , 2012 .

[7]  Shuichi Nitta,et al.  The noise induced on electronic circuits connected with printed circuit board traces due to noise superposed on an external signal cable and their reduction method , 1999 .

[8]  Kanno Shin,et al.  The mechanism and characteristics of electromagnetic disturbances emitted from LED and fluorescent bulbs. , 2010 .

[9]  Y. Matsumoto.  On the Relation Between the Amplitude Probability Distribution of Noise and Bit Error Probability , 2007, IEEE Transactions on Electromagnetic Compatibility.

[10]  Hirasawa Norihito,et al.  A study on the correlation between common mode voltage measured by using CDNE and radiated electromagnetic field strength emitted from LED bulbs. , 2011 .

[11]  David Leggate,et al.  Interaction of drive modulation and cable parameters on AC motor transients , 1996, IAS '96. Conference Record of the 1996 IEEE Industry Applications Conference Thirty-First IAS Annual Meeting.

[12]  Matsumoto Yasushi,et al.  Evaluation of sensitivity of digital TV receiver subjected to intrasystem interference , 2008 .

[13]  M.A.A. Freitas,et al.  A Simple and Accurate Cable Modeling Suitable for High-frequency Phenomena Analysis in PWM Motor Drives , 2005, 2005 IEEE 36th Power Electronics Specialists Conference.

[14]  Hiroki Ohta,et al.  Relation between electromagnetic noise from LED light bulb and its impact on bit error rate performance of DTTB , 2012, IEICE Electron. Express.

[15]  Hirohito Funato,et al.  Analysis Model of Leakage Current in Long Shield Power Cable in Inverter-Fed AC Drives , 2000 .

[16]  K. Wiklundh,et al.  Relation between the amplitude probability distribution of an interfering signal and its impact on digital radio receivers , 2006, IEEE Transactions on Electromagnetic Compatibility.

[17]  Masayuki Takada,et al.  Digital transmission scheme for ISDB-T and reception characteristics of digital terrestrial television broadcasting system in Japan , 1999, 1999 Digest of Technical Papers. International Conference on Consumer Electronics (Cat. No.99CH36277).

[18]  Hosein Farzanehfard,et al.  Classification and Comparison of EMI Mitigation Techniques in Switching Power Converters – A Review , 2011 .