New Techniques to Reduce Sidelobes in OFDM System

In this paper, we consider out-of-band radiations caused by high sidelobes in orthogonal frequency division multiplexing (OFDM) system. Suppression of sidelobes in OFDM system allows higher spectral efficiency and less interference with existing legacy systems in OFDM based overlay system. We combin...

Full description

Saved in:
Bibliographic Details
Main Authors: Ahmed, S., Rehman, R.U., Humor Hwang
Format: Conference Proceeding
Language:English
Subjects:
Carbon capture and storage
Digital audio broadcasting
Digital modulation
Digital video broadcasting
Europe
Information technology
Interference suppression
OFDM modulation
Phase shift keying
Quadrature amplitude modulation
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this paper, we consider out-of-band radiations caused by high sidelobes in orthogonal frequency division multiplexing (OFDM) system. Suppression of sidelobes in OFDM system allows higher spectral efficiency and less interference with existing legacy systems in OFDM based overlay system. We combine different sidelobe suppression techniques to suppress the sidelobes in OFDM system. The multiple-choice sequence (MCS) is combined with cancellation carriers (CCs) and also MCS is combined with subcarrier weighting (SW) technique. MCS is applied prior to CCs or SW techniques. Simulation results show that combining MCS with CCs and MCS with SW techniques the sidelobes in OFDM system can be significantly reduced, which allow a successful co-existance between OFDM overlay system and an existing legacy system.
DOI:10.1109/ICCIT.2008.157