Application of Multirate Filter Bank to Group Demodulation of Frequency-Multiplexed TDMA Signals

Application of Multirate Filter Bank to Group Demodulation of Frequency-Multiplexed TDMA Signals

As a method to obtain the baseband signal from each of several time division multiple access (TDMA) signals that are frequency‐multiplexed in the uplink in wireless communication, this paper proposes a method of group demodulation using a multirate filter bank. The proposed method allows demodulatio...

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Veröffentlicht in:Electronics & communications in Japan. Part 1, Communications Communications, 2002-04, Vol.85 (4), p.44-52
Hauptverfasser: Matsuda, Takahiro, Hara, Shinsuke, Morinaga, Norihiko
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Sprache:eng
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group demodulation
IIR filter
linear phase response
Multirate filter bank
software radio
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container_title Electronics & communications in Japan. Part 1, Communications
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creator Matsuda, Takahiro
Hara, Shinsuke
Morinaga, Norihiko
description As a method to obtain the baseband signal from each of several time division multiple access (TDMA) signals that are frequency‐multiplexed in the uplink in wireless communication, this paper proposes a method of group demodulation using a multirate filter bank. The proposed method allows demodulation when the TDMA signals are asynchronously received in the uplink. Further, it can be applied to the case in which TDMA signals with different bandwidths are frequency‐multiplexed, if the multiple resolution capability of the multirate filter bank is used. Hence, this method is useful in the situation where several different types of signals coexist in such environments as software radio. In the systems discussed in this paper, it is necessary to realize a sharp amplitude response and a linear phase response in the filters of the multirate filter bank with a small computational effort. This is accomplished in this paper by using an infinite impulse response (IIR) filter with approximately linear phase response. © 2001 Scripta Technica, Electron Comm Jpn Pt 1, 85(4): 44–52, 2002
doi_str_mv 10.1002/ecja.1089
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subjects group demodulation
IIR filter
linear phase response
Multirate filter bank
software radio
title Application of Multirate Filter Bank to Group Demodulation of Frequency-Multiplexed TDMA Signals
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