Demodulating device and method for W-CDMA base station
First Claim
1. A demodulator of a wideband code division access (W-CDMA) system base station comprising:
- a chip calculator for receiving signals through a plurality of sectors each of which includes a plurality of antennas, and de-spreading the received signals;
a symbol calculator for selectively using symbols of a control channel and a data channel from the signals de-spread by the chip calculator, estimating a channel, and combining the signals input through a multi-path;
a frame calculator for combining the signals combined by the symbol calculator for each frame to perform transport format combination indicator (TFCI) decoding, feedback information (FBI) decoding, frame sync estimation, signal to noise ratio (SNR) estimation, and post-combining and second de-interleaving calculation;
a storage unit for storing output values of the chip calculator, the symbol calculator, and the frame calculator;
a storage unit controller for controlling input/output signals between the chip calculator, the symbol calculator, the frame calculator, and the storage unit; and
a host interface for controlling input/output signals between the chip calculator, the symbol calculator, the frame calculator, and a host.
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Accused Products
Abstract
A demodulator of a W-CDMA base station comprises: a chip calculator for de-spreading signals received through sectors including antennas; a symbol calculator for using symbols of a control channel and a data channel from the de-spread signals, estimating a channel, and combining signals input through a multi-path; a frame calculator for combining the combined signals to perform transport format combination indicator decoding, feedback information decoding, frame sync estimation, SNR estimation, post-combining, and second de-interleaving; a storage unit for storing outputs of the chip calculator, symbol calculator, and frame calculator; a storage unit controller for controlling inputs/outputs between the chip calculator, symbol calculator, frame calculator, and storage unit; and a host interface for controlling inputs/outputs between the chip calculator, symbol calculator, frame calculator, and host.
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Citations
16 Claims
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1. A demodulator of a wideband code division access (W-CDMA) system base station comprising:
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a chip calculator for receiving signals through a plurality of sectors each of which includes a plurality of antennas, and de-spreading the received signals;
a symbol calculator for selectively using symbols of a control channel and a data channel from the signals de-spread by the chip calculator, estimating a channel, and combining the signals input through a multi-path;
a frame calculator for combining the signals combined by the symbol calculator for each frame to perform transport format combination indicator (TFCI) decoding, feedback information (FBI) decoding, frame sync estimation, signal to noise ratio (SNR) estimation, and post-combining and second de-interleaving calculation;
a storage unit for storing output values of the chip calculator, the symbol calculator, and the frame calculator;
a storage unit controller for controlling input/output signals between the chip calculator, the symbol calculator, the frame calculator, and the storage unit; and
a host interface for controlling input/output signals between the chip calculator, the symbol calculator, the frame calculator, and a host. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A demodulation method of a W-CDMA base station comprising:
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(a) receiving signals from a plurality of sectors each of which includes a plurality of antennas, and de-spreading the received signals at a finger unit that is dynamically allocated to each user;
(b) selectively using symbols of a control channel and a data channel from the de-spread signals to estimate a channel, and using a value obtained by channel estimation to combine signals input through a multi-path; and
(c) classifying the combined signals according to at least one condition of time delay and reliability conditions, and performing TFCI decoding, FBI decoding, frame sync estimation, SNR estimation, post-combining, and second de-interleaving. - View Dependent Claims (15, 16)
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Specification