Electronic device and noise-cancellation method
AssigneeWistron Neweb Corp.
InventorsChen-Chao Chang, Yung-Cheng Lin
Life of this patent
Estimating the term…
Abstract
The present invention provides an electronic device including a coupler, a noise-estimation apparatus and an assembly unit. The coupler receives a baseband signal. The noise-estimation apparatus receives the baseband signal and subtracts a predetermined synchronization preamble from the baseband signal to obtain a noise-estimation signal, and the predetermined synchronization preamble is a transmission signal that conforms to the standards of 802.11bg and/or IEEE 802.11n. The assembly unit receives the baseband signal and subtracts a noise-estimation signal from the baseband signal to obtain an output signal.
Claims7
An electronic device, comprising:
- a down converter for decreasing the frequency of a first RF signal to generate the baseband signal;
- a coupler, coupled to the down converter, wherein the coupler receives the baseband signal;
- a noise-estimation apparatus, connected to the coupler, wherein the noise-estimation apparatus receives the baseband signal and subtract a predetermined synchronization preamble from the baseband signal to obtain a noise-estimation signal, and the predetermined synchronization preamble conforms to the IEEE 802.11bg standard and/or the IEEE 802.11n standard;
- an assembly unit, connected to the coupler and the noise-estimation apparatus, wherein the assembly unit receives the baseband signal from the coupler and the noise-estimation signal from noise-estimation apparatus and subtracts the noise-estimation signal from the baseband signal to obtain an output signal;
- and
- a demodulator, coupled to the assembly unit, wherein the assembly unit outputs the output signal to the demodulator without passing through the down converter and the coupler.
Dependencies are inferred from the claim text.