Spectrum notch techniques for TDS-OFDM system

Author

Wenbo Ding ; Fang Yang ; Jian Song ; Fei Ren ; Jia Li

Author_Institution

Res. Inst. of Inf. Technol. & Electron. Eng. Dept., Tsinghua Univ., Beijing, China

fYear

2013

fDate

1-5 July 2013

Firstpage

895

Lastpage

899

Abstract

In this paper, the spectrum notch technique which combines the time-domain windowing and training sequence (TS) redesigning for the time domain synchronous orthogonal frequency division multiplexing (TDS-OFDM) system is proposed. An improved frame structure with overlapping between adjacent frames for the dual pseudo noise padded (DPNP) TDS-OFDM system is put forward to make the spectral efficiency undiminished. The simulation results show that this method can deepen the notches in the power spectrum density (PSD) compared to the conventional TDS-OFDM system by about 7 to 8 dB without any spectrum efficiency cost, which could be in accordance with the -30dB spectrum notch requirements in the spectral mask defined in HomePlugAV 1.1.

Keywords

OFDM modulation; time-domain analysis; DPNP TDS-OFDM system; HomePlugAV 1.1; TS redesigning; dual pseudo noise padded TDS-OFDM system; frame structure; power spectrum density; spectral efficiency; spectral mask; spectrum notch technique; time domain synchronous orthogonal frequency division multiplexing system; time-domain windowing; training sequence redesigning; Broadcasting; Discrete Fourier transforms; OFDM; Synchronization; Time-domain analysis; Time-frequency analysis; TDS-OFDM; spectral mask; spectrum notch; time-domain windowing; training sequence (TS) redesigning;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Mobile Computing Conference (IWCMC), 2013 9th International

Conference_Location

Sardinia

Print_ISBN

978-1-4673-2479-3

Type

conf

DOI

10.1109/IWCMC.2013.6583676

Filename

6583676