A Channel Estimation Technique for Dynamic Parameter Controlled - OF/TDMA Systems

Konferenz: PIMRC 2005 - 16th Annual IEEE International Symposium on Personal Indoor and Mobile Radio Communications
11.09.2005 - 14.09.2005 in Berlin, Germany

Tagungsband: PIMRC 2005

Seiten: 5Sprache: EnglischTyp: PDF

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Yokomakura, Kazunari; Sampei, Seiichi (Graduate School of Engineering, Osaka University, Japan)
Harada, Hiroshi (National Institute of Informatioin and Communications Technology, Japan)
Morinaga, Norihiko (Department of Information Technology, Faculty of Infrastructural Technologies, Hiroshima International University, Japan)

This paper proposes a channel estimation technique for the dynamic parameter controlled - orthogonal frequency and time division multiple access (DPC-OF/TDMA) system. In the proposed scheme, channel impulse response that represents channel state information (CSI) is measured using a carrier interferometry (CI) which is equivalent to impulse transmission. Moreover, because the minimum unit (subchannel block) of subcarriers to be allocated to each tenninal is 64 subcarriers, to achieve high accuracy of the estimated CSI with a spreading factor of 64, code-multiplexed pilot signal is applied to identify base station (BS) in the cell search process, and CSI between a terminal and each transmit antenna element in the BS is detected using a time-domain-muItiplexed CI signal for ease of extension of the DPC-OF/TDMA to multi-input multi-output (MIMO) systems. Furthermore, we wiII also propose a CSI estimation scheme flexible to the plural subchannel block assignment cases. Computer simulation confirms that the proposed scheme can estimate the CSI regardless of the number of subchannel blocks assigned to each tenninal.