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US 2004/0071118 A1Published application
Multi-carrier reception for ultra-wideband (UWB) systems
AssigneeTexas Instruments Incorporated
InventorsAnand G. Dabak, Anuj Batra
Life of this patent
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Abstract
System and method for receiving transmissions in a wireless communications system. A preferred embodiment comprises a receiver (such as receiver 400) that can despread and then demodulate a symbol from a transmitter that first spread and then modulated the symbol. By reversing the processing order, the demodulation can be performed at a lower data rate and therefore reducing computational and power requirements.
Claims26
A method comprising:
- receiving a symbol, wherein the symbol is first spread with a spreading code used to spread all symbols to be transmitted and then modulated;
- stripping redundancy from the symbol;
- despreading the symbol;
- and
- demodulating the symbol.
2 more elements
A receiver comprising:
- an analog section coupled to a signal input, the analog section containing circuitry to filter and amplify a signal received at the signal input;
- an analog-to-digital converter (ADC) coupled to the analog section, the ADC to convert an output of the analog section into a digital symbol stream;
- a digital section coupled to the ADC, the digital section comprising
- a redundancy elimination circuit (REC) coupled to the ADC, the REC containing circuitry to removed redundancies inserted into a digital symbol;
- a despreader coupled to the REC, the despreader containing circuitry to apply a spreading code to a digital symbol, one digital symbol at a time;
- and
- a demodulator coupled to the despreader, the demodulator containing circuitry to remove modulation applied to the digital symbol.
4 more elements
Dependencies are inferred from the claim text.