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Spectrally Precoded OFDM Without Guard Insertion

Spectrally Precoded OFDM Without Guard Insertion

Starting at: Rs.5,500.00

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 Spectrally Precoded OFDM Without Guard Insertion

Orthogonal frequency-division multiplexing (OFDM) signaling format is commonly associated with guard subintervals to reject inter block interference (IBI) and enable simple one-tap frequency-domain equalization (FDE) at the receiver when received over dispersive channels. Despite the advantages, the insertion of guard subintervals expands the signal spectrum and thus trades off the spectral efficiency significantly. In this paper, the non guarded OFDM (NG-OFDM) signaling format, which is exactly OFDM without inserting guard subintervals, is considered to avoid the spectrum expansion and combined with spectral precoding to further achieve high spectrum compactness. In par-ticular, spectral precoders are designed for NG-OFDM to provide very small spectral side lobes, and thus extremely compact signal spectrum, and associate the transmitted waveform with low peak-to-average power ratio. To reject IBI among received NG-OFDM blocks over dispersive channels, a guard subinterval in each received block is removed at the receiver, and this turns the resultant receiver as non orthogonal over subcarrier sub channels, thus resulting in intercarrier interference (ICI). The correspond-ing channel capacity and linear minimum-mean-square-error (LMMSE) data estimation are analyzed.


 


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  • Model: PROJ7572
  • 999 Units in Stock
  • Manufactured by: ClickMyProjects

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This product was added to our catalog on Monday 31 July, 2017.

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