Reduction of Out-of-Band Radiation in OFDM Based DRM Simulcast Systems

Author

Wang, Peng ; An, Jianping ; Wu, Yanbo

Author_Institution

Dept. of Electron. & Eng., Beijing Inst. of Technol.

fYear

2006

fDate

22-24 Sept. 2006

Firstpage

1

Lastpage

4

Abstract

The simulcast transmission of the DRM and AM is an important approach during the interim from the analogue AM to digital AM broadcasting below 30 MHz. The reduction of out-of-band (OOB) radiation of OFDM signals in simulcast systems is one of the essential issues. In this paper, we introduce the concept of the cancellation carriers (CCs) which suppress the sidelobes of the OFDM signal by inserting well-defined subcarriers at the borders of the OFDM spectrum. In order to satisfy the demand of the simulcast system, we proposed limited-CCs method in which we occupy the subcarriers originally used for data transmission instead of inserting new subcarriers. Simulation results show that by the proposed technique the OOB power can be decreased by about 15 dB at the cost of a slight loss of data rate

Keywords

OFDM modulation; digital radio; electromagnetic waves; radio broadcasting; AM broadcasting; OFDM based DRM simulcast systems; cancellation carriers; digital radio mondiale; out-of-band radiation reduction; Broadcast technology; Carbon capture and storage; Costs; Data communication; Digital Radio Mondiale; Filters; OFDM modulation; Phase shift keying; Radio broadcasting; Signal design;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications, Networking and Mobile Computing, 2006. WiCOM 2006.International Conference on

Conference_Location

Wuhan

Print_ISBN

1-4244-0517-3

Type

conf

DOI

10.1109/WiCOM.2006.77

Filename

4149254