Title :
A Synchronous Digital Duplexing Technique for Wireless Transmission in Indoor Environments
Author :
Park, Chang-Hwan ; Ko, Yo-Han ; Park, Kyung-Won ; Jeon, Won-Gi ; Paik, Jong-Ho ; Lee, Seok-pil ; Cho, Yong-Soo
Author_Institution :
Sch. of Electr. & Electron. Eng., Chung-Ang Univ., Seoul
Abstract :
In this paper, we propose a new digital duplexing scheme, called synchronous digital duplexing (SDD), which can increase data efficiency and flexibility of resource by transmitting uplink signal and downlink signal simultaneously in wireless communication. In order to transmit uplink and downlink signals simultaneously, the proposed SDD obtains mutual information among subscriber stations (SSs) with a mutual ranging symbol. This information is used for selection of transmission time, decision on cyclic suffix (CS) insertion, determination of CS length, and re-establishment of FFT starting point. It is shown that in terms of efficiency and flexibility the proposed SDD is better equipped as a duplexing scheme for indoor wireless environments than conventional time division duplexing (TDD) and frequency division duplexing (FDD).
Keywords :
OFDM modulation; indoor communication; synchronous digital hierarchy; wireless LAN; cyclic suffix insertion; data efficiency; indoor environments; mutual information; mutual ranging symbol; resource flexibility; subscriber stations; synchronous digital duplexing technique; transmission time; wireless communication; wireless transmission; Data engineering; Downlink; Frequency conversion; Indoor environments; Mutual information; Radiofrequency interference; Resource management; Timing; Wireless communication; Wires;
Conference_Titel :
Vehicular Technology Conference, 2009. VTC Spring 2009. IEEE 69th
Conference_Location :
Barcelona
Print_ISBN :
978-1-4244-2517-4
Electronic_ISBN :
1550-2252
DOI :
10.1109/VETECS.2009.5073350