A Synchronous Digital Duplexing Technique for OFDMA-Based Indoor Communications

Chang-Hwan PARK; Yo-Han KO; Yeong-Jun KIM; Kyung-Won PARK; Won-Gi JEON; Jong-Ho PAIK; Seok-Pil LEE; Yong-Soo CHO

doi:10.1587/transcom.E92.B.2492

Regular Section

A Synchronous Digital Duplexing Technique for OFDMA-Based Indoor Communications

Chang-Hwan PARK, Yo-Han KO, Yeong-Jun KIM, Kyung-Won PARK, Won-Gi JEON, Jong-Ho PAIK, Seok-Pil LEE, Yong-Soo CHO

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Keywords: SDD, OFDM, TDD, FDD, Zipper, mutual ranging

JOURNAL RESTRICTED ACCESS

2009 Volume E92.B Issue 7 Pages 2492-2495

DOI https://doi.org/10.1587/transcom.E92.B.2492

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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.

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