Variable channel device for wideband CDMA system
AssigneeSamsung Electronics Co., Ltd.
InventorsSung-Soo Dong, Se-Jin Kang
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Abstract
A traffic variable channel device for a W-CDMA system comprising a convolutional encoder for receiving traffic information bits; a symbol puncturer connected to the convolutional encoder; an inserter connected to the symbol puncturer; a multiplexer connected to the inserter and the symbol puncturer; a scramble code generator for receiving a scramble code seed; an AND gate connected to the scramble code generator, a scramble select signal and a forward/reverse select signal; and, a scramble code spreader connected to the multiplexer and the AND gate for generating a forward/reverse traffic channel signal.
Claims19
A variable channel device for a wideband code division multiple access (W-CDMA) system, comprising:
- a frame quality indicator for receiving information bits of a reverse power control channel;
- a serial-to-parallel converter coupled to the output of the frame quality indicator;
- a first multiplexer coupled to the output of the frame quality indicator and the serial-to-parallel converter;
- a first symbol repeater coupled to the output of the first multiplexer;
- a second symbol repeater for repeating symbols of discontinuous transmission data for a reserve channel;
- a second multiplexer coupled to the output of the frame quality indicator, the serial-to-parallel converter and the second symbol repeater, and for receiving information bits of a pilot channel;
- a third symbol repeater coupled to the output of the second multiplexer;
- a convolutional encoder for receiving information bits of a signaling channel;
- a symbol puncturer coupled to the output of the convolutional encoder;
- an inserter coupled to the output of the symbol puncturer;
- a third multiplexer coupled to the output of the symbol puncturer and the inserter;
- a first-time-division-multiplexer coupled to collectively receive the output of the first symbol repeater, the third symbol repeater, the third multiplexer, for outputting a reverse PCS channel signal;
- a fourth symbol repeater for repeating symbols of discontinuous transmission data for the reserve channel;
- a second-time-division-multiplexer coupled to receive the output of the fourth symbol repeater and for receiving information bits for a forward power control channel;
- a fifth symbol repeater coupled to the output of the second time-division-multiplexer;
- a first AND gate coupled to the output of the third multiplexer;
- and,
- a second AND gate coupled to the output of the fifth symbol repeater, wherein the first AND gate and the second AND gate selectively outputs a forward PCS channel signal in response to a PCS select signal.
A variable channel device for a W-CDMA system, comprising:
- a convolutional encoder for receiving traffic information bits;
- a symbol puncturer coupled to the output of the convolutional encoder;
- an inserter coupled to the output of the symbol puncturer;
- a multiplexer coupled to the output of the inserter and the symbol puncturer;
- a scramble code generator for receiving a scramble code seed;
- an AND gate coupled to the output of the scramble code generator, and for receiving a scramble select signal and a forward/reverse select signal;
- and,
- a scramble code spreader coupled to the output of the multiplexer and the AND gate, for generating a forward/reverse traffic channel signal.
Dependencies are inferred from the claim text.