NDLI: Approach to suppress out-of-band emission for dual pseudo noise padded time-domain synchronous-orthogonal frequency division multiplexing systems

Content Provider	IET Digital Library
Author	Ding, Wenbo Yang, Fang Liu, Sicong Song, Jian
Abstract	The dual pseudo noise padded (DPNP) time-domain synchronous-orthogonal frequency division multiplexing (TDS-OFDM) which utilises the second pseudo noise (PN) sequence for channel estimation is able to reduce the complexity and improve the accuracy of channel estimation compared to the classical TDS-OFDM. However, because of the duplicate PN sequence, DPNP TDS-OFDM will suffer from severer out-of-band emission, which is a headache issue for the conventional TDS-OFDM. In this study, a novel out-of-band suppression approach based on a new PN design criterion as well as a windowing operation is proposed for the DPNP TDS-OFDM systems. The frame structure and system model are also modified to accommodate to the approach, while the overlap-and-add approach is adopted to guarantee the spectral efficiency. Both simulation and experimental results show that this approach could achieve satisfactory performance with much less complexity and no spectral efficiency loss compared to the classical DPNP TDS-OFDM system. In addition, an iterative channel estimation method is also proposed for the modified frame structure to combat against the long channel delay spread.
Starting Page	1606
Ending Page	1614
Page Count	9
ISSN	17518628
Volume Number	9
e-ISSN	17518636
Issue Number	Issue 13, Sep (2015)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/9/13
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2014.1251
Journal	IET Communications
Publisher Date	2015-07-14
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Channel Estimation Communication Channel Equalisation And Identification DPNP-TDS-OFDM Dual Pseudonoise Padded Time-domain Synchronous-orthogonal Frequency Division Multiplexing System Frame Structure Interpolation And Function Approximation Iterative Channel Estimation Method Iterative Method Long Channel Delay Spread Modulation And Coding Method Numerical Analysis OFDM Modulation Out-of-band Emission Suppression Out-of-band Suppression Approach Overlap-and-add Approach PN Sequence Time Domain Analysis Windowing Operation
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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