Title :
Joint optimization of downlink subcarrier allocation and PAPR reduction for OFDM based on-board switching scheme
Author :
Po, Zhou ; Junhong, Dang ; Cao, Zhigang
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing, China
Abstract :
A novel OFDM based on-board switching scheme has been proposed, which can achieve service switching by on-board subcarrier switching. This paper focuses on the satellite spot beam downlinks, and proposes a joint optimization method of downlink subcarrier allocation and PAPR reduction. In this method, subcarriers can be allocated adaptively to the services of different user terminals according to the current downlink channel state information, transmit power limit, service destinations, QoS requirements, and PAPR of the downlink OFDM signal. Simulation results show that the proposed method can satisfy the QoS requirements and reduce the PAPR to the utmost without extra side information and transmit power.
Keywords :
OFDM modulation; quality of service; satellite communication; subcarrier multiplexing; switches; OFDM; PAPR reduction; current downlink channel state information; downlink subcarrier allocation; joint optimization method; on-board switching scheme; satellite spot beam downlinks; service destinations; transmit power limit; Baseband; Communication switching; Downlink; Frequency estimation; OFDM; Optimization methods; Peak to average power ratio; Satellite communication; Switches; Wireless communication; OFDM; On-Board Switch; PAPR Reduction; Subcarrier Allocation;
Conference_Titel :
Communications, 2009. APCC 2009. 15th Asia-Pacific Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-4784-8
Electronic_ISBN :
978-1-4244-4785-5
DOI :
10.1109/APCC.2009.5375662
