A new asynchronous group demodulator with complex multi-rate filter bank

Tanaka, Ryouya; Okada, Minoru; Hara, Shinsuke; Morinaga, Norihiko

doi:10.1109/pimrc.1996.567409

Cited by 3 publications

(3 citation statements)

References 5 publications

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“…modulated TDMA signal can easily be extracted and demodulated at the output of the analysis filter bank [13]. When the DS-CDMA signal and the TDMA signal are transmitted in the same frequency band, the base station of the DS-CDMA system and those of the TDMA system are usually separated, as in Fig.…”

Section: Elimination Of Narrowband Interferencementioning

confidence: 99%

Joint receiver for DS-CDMA/TDMA signals using complex multirate filter bank

Matsuda¹,

Hara²,

Morinaga³

1999

Electron. Comm. Jpn. Pt. I

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This paper discusses the problem of coexistence of DS‐CDMA (direct sequence code division multiplex access) and TDMA (time division multiple access) systems where their signals are transmitted in the same frequency band. The DS‐CDMA signal is robust against narrowband interference, but there is a limit to its immunity against interference. This paper proposes, from such a viewpoint, a method using a complex multirate filter bank, as a way to reject TDMA signals, which act as narrowband interference to the DS‐CDMA signal, in the coexistence system. By the proposed method, a notch filter can be composed with an arbitrary frequency resolution at an arbitrary frequency, by constructing the complex version of the conventional multirate filter bank. It is shown that, by eliminating the TDMA signal by the proposed method, the bit error rate of the DS‐CDMA signal is improved, indicating that the proposed system is useful in the coexistence problem. © 1999 Scripta Technica, Electron Comm Jpn Pt 1, 82(5): 34–41, 1999

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Section: Elimination Of Narrowband Interferencementioning

confidence: 99%

Joint receiver for DS-CDMA/TDMA signals using complex multirate filter bank

Matsuda¹,

Hara²,

Morinaga³

1999

Electron. Comm. Jpn. Pt. I

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“…In this paper, we propose a method of group demodulation using the multirate filter bank so that the TDMA signals in the frequency-multiplexed systems are efficiently received without several local oscillators [14]. In this scheme, the baseband signals of all TDMA signals can be obtained simultaneously from several frequency-multiplexed TDMA signals.…”

Section: Introductionmentioning

confidence: 99%

“…Further, by virtue of the multipleresolution characteristic of the multirate filter bank, signals with various bandwidths can be handled. In this paper, we use a complex multirate filter bank [69,14] that allows the processing of complex baseband signals in wireless communication.…”

Section: Introductionmentioning

confidence: 99%

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

Matsuda

Hara

Morinaga

2002

Electron. Comm. Jpn. Pt. I

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SUMMARYAs 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 (

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Filter bank-based adaptive interference canceler for co-existence problem of TDMA/CDMA systems

Hara

Masutani²,

Matsuda³

Gateway to 21st Century Communications Village. VTC 1999-Fall. IEEE VTS 50th Vehicular Technology Conference (Cat. No.99CH36324

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A new asynchronous group demodulator with complex multi-rate filter bank

Cited by 3 publications

References 5 publications

Joint receiver for DS-CDMA/TDMA signals using complex multirate filter bank

Joint receiver for DS-CDMA/TDMA signals using complex multirate filter bank

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

Filter bank-based adaptive interference canceler for co-existence problem of TDMA/CDMA systems

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