Receiver apparatus

Details Receiver apparatus Receiver apparatus

2006-04-25

2006-04-25

Chin, Stephen (Department: 2631)

Pulse or digital communications

Receivers

C375S347000, C375S349000, C455S132000

Reexamination Certificate

active

07035348

ABSTRACT:
A receiver configured to receive a plurality of signals k (k=1, 2, . . . , M) allocated in a first frequency band. The receiver includes a frequency conversion section for reallocating the signals k in a second frequency band for sampling by a single AD converter at a sampling frequency fssuch that digital data of the sampled signals k are obtained in a third frequency band extending from zero Hz to a frequency represented by fs/2; and a signal extraction section for extracting a target base band signal k from the digital data obtained by the AD conversion section. The frequency conversion section performs the reallocation in such a manner that at least a frequency represented by Jfs/2 (J is an integer) is located between the frequencies of at least two of the signals k and that the sampled signals do not overlap.

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Takahiro Matsuda, et al. “Multimedia Wireless Transmission System Using Complex-Coefficient Multirate Filter Bank” B-I vol. J81-B-I No. 11. Nov. 1998, pp. 671-680.
Takahiro Matsuda, et al. “Application of Multirate Filter Bank To Group Demodulation of Frequency-Multiplexed TDMA Signals” B-I vol. J83-B No. 9. Sep. 2000, pp. 1217-1225.
Kojiro Nagashima, et al. “Its Simultaneous Software Radio Prototype” A-17-45 p. 426.

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