Title
Channel estimation method using power control schemes in wireless systems.
Abstract
Green communication is a new paradigm of designing the communication system which considers not only the processing performance but also the energy efficiency. Power control management is one of the approaches in green communication to reduce the power consumption in distributed communication system. In this paper, we propose improved power control schemes for mobile satellite systems with ancillary terrestrial components (ATCs). In order to increase system capacity and reduce the transmitting power of the user's equipment, we propose an efficient channel estimation method consisting of a modified open-loop power control (OLPC) and closed-loop power control (CLPC). The OLPC works well if the forward and reverse links are perfectly correlated. The CLPC is sensitive to round-trip delay and, therefore, it is not effective in a mobile satellite system. In order to solve the above problem, we added monitoring equipment to both the OLPC and CLPC to use information about transmitting power that has not yet been received by the receiver over the satellite/ATC channel. Moreover, we adapted an efficient pilot diversity of both OLPC and CLPC in order to get a better signal to interference plus noise ratio estimation of the received signal.
Year
DOI
Venue
2010
10.1109/JCN.2010.6391370
Journal of Communications and Networks
Keywords
Field
DocType
power control,fading,satellites,mobile communication
Fading,Efficient energy use,Computer science,Power control,Satellite system,Communication channel,Communications system,Real-time computing,Signal-to-interference-plus-noise ratio,Mobile telephony
Journal
Volume
Issue
ISSN
12
2
1229-2370
Citations 
PageRank 
References 
0
0.34
6
Authors
2
Name
Order
Citations
PageRank
Byoung-gi Kim152.39
Sangjin Ryoo2710.71