Reconfigurable Pulse Detector in Wireless Communications System
AssigneeKoninklijke Phillips Electronic N.V.
InventorsGerard Van Der Weide, Raf Lodewijk Jan Roovers, Harish Kundur Subramaniyan
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Abstract
In a receiver architecture, for example for use in receiving pulses in an Ultra Wideband system, a received signal is applied to a mixer, together with pulses which correspond to expected received pulses. The mixer output is applied to a block, which can be configured either as an integrator or as a filter. When no pulses are being received, this block is configured as a filter, allowing it to lock quickly to any new sequence of pulses, while, when the system has locked to a sequence of pulses, the block is configured as an integrator, so that an improved signal-noise ratio can be achieved.
Claims14
A radio receiver, comprising:
- a pulse generator, for generating pulses based on an expected received signal;
- a multiplier, for multiplying a received signal by the generated pulses;
- and
- a circuit for receiving the multiplier output, wherein said circuit is operable in a first mode to act as a low-pass filter, and wherein said circuit is operable in a second mode to act as an integrator.
A method of operating a radio receiver, comprising:
- multiplying a received signal by a sequence of generated pulses;
- in a first mode, applying a multiplication output to a low-pass filter, and
- in a second mode, applying the multiplier output to an integrator.
A wireless communications system, comprising:
- a radio transmitter, for generating and transmitting a radio signal;
- and
- a radio receiver, wherein the radio receiver comprises:
- a pulse generator, for generating pulses based on an expected received signal;
- a multiplier, for multiplying a received signal by the generated pulses;
- and
- a circuit for receiving the multiplier output, wherein said circuit is operable in a first mode to act as a low-pass filter, and wherein said circuit is operable in a second mode to act as an integrator.
Dependencies are inferred from the claim text.