Spectrally Precoded OFDM With Power Loading
Date Issued
2008
Date
2008
Author(s)
Liu, Hsing-Hung
Abstract
In this thesis, we combine spectrally precoded OFDM (SP-OFDM) with power loading (PL) in order to improve BER performance and provide very high spectral efficiency. We add iterative approximate minimum BER (IAMBER), equal gain (EG) and minimum mean squared error (MMSE) power loading to SP-OFDM system, and especially we do the power loading for the data before and after spectrally precoding. Besides, the proposed IAMBER power loading algorithm corrects the approximate minimum BER (AMBER) power loading in [8]. Eventually, on two-ray fading channels, we will compare average BER performance, fractional out-of-band power characteristics and complexity of the spectral codes with different power loading algorithms.
Subjects
Spectral precoding
orthogonal frequency division multiplexing (OFDM)
power loading
spectral efficiency
two-ray fading channels
Type
thesis
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