Precoding in MIMO, OFDM to reduce PAPR (Peak to Average Power Ratio)
Independent thesis Advanced level (degree of Master (Two Years)), 80 credits / 120 HE creditsStudent thesis
One of the critical issues of systems utilizing Orthogonal Frequency Division Multiplexing (OFDM) is the high peak to the average power ratio of OFDM signals. We have used Precoding as a way to mitigate the PAPR problem. Furthermore the performance of Precoded OFDM in fading multi-path channels has been studied. This thesis is based on an efficient technique for reducing the PAPR of OFDM signals. The proposed technique is data-independent and thus, does not require new processing and optimization for each transmitted OFDM block. The reduction in PAPR of the OFDM signal is obtained through a proper selection of a Precoding scheme that distributes the power of each modulated symbol over the OFDM block. The obtained results show that this Precoding scheme is an attractive solution to the PAPR problem of OFDM signals.
Place, publisher, year, edition, pages
2012. , 64 p.
Peak to Average Power Ratio
IdentifiersURN: urn:nbn:se:lnu:diva-18621OAI: oai:DiVA.org:lnu-18621DiVA: diva2:525673
Subject / course
Electrical Engineering with specialisation in Signal Processing & Wave Propagation, Master Programme, 120 credits
2012-04-18, B-3033, Vaxjo, 11:00 (English)