Adding errors to reduce the PAPR and BER of OFDM-based transmissions
2013 (English)In: 2013 IEEE International Instrumentation and Measurement Technology Conference (I2MTC 2013), New York: IEEE , 2013, 743-746 p.Conference paper (Refereed)
When transmitting signals, one of the most important issues is to keep the transmission errors as low as possible. Or in other words, to obtain a reliable transmission link, the bit-error-rate (BER) should be kept within certain limits. However, the probability of transmission errors strongly depends on the signal-to-noise ratio (SNR) of the transmitted signals. Hence, the power amplifier plays a key role in the sender part: the more power, the higher the SNR, the lower the probability of transmission errors. Unfortunately, this is a too simple vision.
One should take care to keep the peak-to-average power ratio (PAPR) of the transmitted signal low in order not to push the power amplifier into its nonlinear operation region. Classical techniques use clipping or backing-off the input signal to reduce the PAPR of the transmitted signal. However, these techniques have a negative influence on the SNR and hence on the BER.
In this paper, we present a technique to reduce the PAPR of the transmitted signals and hence to reduce the BER, by introducing errors into Orthogonal Frequency Division Multiplexing (OFDM) signals in a controlled way. Channel coding will be used to compensate for the introduced errors.
Place, publisher, year, edition, pages
New York: IEEE , 2013. 743-746 p.
, IEEE Instrumentation and Measurement Technology Conference, ISSN 1091-5281
Bit error rate, Channel coding, Modulation, Peak to average power ratio, Power amplifiers, Signal to noise ratio, OFDM, bit-error-rate, peak-to-average power ratio
IdentifiersURN: urn:nbn:se:hig:diva-14916DOI: 10.1109/I2MTC.2013.6555514ISI: 000326900400142ScopusID: 2-s2.0-84882254974ISBN: 978-1-4673-4621-4OAI: oai:DiVA.org:hig-14916DiVA: diva2:637497
Instrumentation and Measurement Technology Conference (I2MTC), Minneapolis, 6-9 May 2013