Examples of 'despreading' in a sentence
Meaning of "despreading"
despreading (verb): A signal processing technique used in telecommunications to separate a transmitted signal from noise or interference
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- present participle of despread
How to use "despreading" in a sentence
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despreading
The process of despreading a signal is called correlation.
The second stage is the despreading stage.
Despreading the spread symbols to recover symbols of the received signals.
Also a new algorithm for blind despreading is proposed.
The despreading device also compensates for multipath in the communication channel.
Filtering matched to the chip sequence is called despreading.
Each receiver branch performs despreading and demodulation processes.
Baseband demodulation essentially consists in a descrambling and a despreading.
Method and apparatus for despreading data in a wireless communication system.
This rejection is known as the processing gain of the despreading correlation process.
The despreading is in reality a correlation and so requires an integration over the symbol period.
Furthermore the spreading and the despreading may be controlled by the actuation system.
Despreading the baseband signal at a rate that is the same as the chip rate.
The performance of the blind despreading methods is measured by the obtained processing gain.
The data symbol combining operation takes place after the despreading operation.
See also
Means for despreading the spread symbols to recover symbols of the received signals.
Both channels can be separated from each other by despreading with orthogonal spreading codes.
The despreading means is coupled between the receiving means and the demodulating means.
Processing gain is a direct consequence of the direct sequence radio signal spreading and despreading process.
Synchronous reception and despreading of the signal at the receiver recovers the original information.
The present invention is also useful for BPSK despreading.
The despreading process also needs a corresponding PN sequence.
It will be understood that SYNC establishes initial timing for the despreading and demodulation processes.
The despreading operation can be performed for example by means of a Rake receiver.
A Node B may recover the symbols sent by these UEs by performing the complementary despreading.
This despreading removes the other CDMA channels from the respective despread channel.
Defining a set of available despreading delays for the channel ;.
Despreading by the CDMA OVSF spreading code associated with the mobile u of spreading factor Nu.
Generating a despreading traffic sequence ;.
Despreading the first spread spectrum signal ;.
Of course, demodulation may take place either before or after despreading.
The various message despreading circuits operate on this combined multipath component signal from the AMF.
That is, a determination is made that an appropriate time offset has been used in despreading.
Despreading the spectrum of a signal using the despreading signal ;.
Each mobile station includes despreading means and variable-gain means.
Serial despreading reduces the chip to symbol rate to 8 chips per symbol.
The result is that longer coherent despreading can be performed, and performance improved.
For this, the receiver has to perform a demapping operation after the despreading.
Alternatively, the plurality of despreading means may be a combination of matched filters and correlators.
Two approaches to solve Equation 3 use an equalization stage followed by a despreading stage.
The despreading operation on reception requires significant calculation capabilities, therefore more expensive components.
Correlators and matched filters for despreading a spread-spectrum signal are well known in the art.
FIG . 7 is a block diagram of a portion of a digital demodulator and Walsh despreading unit.
Means for despreading said signal samples using rotated acquisition code yielding despread data ;.
Accordingly, the present invention may include third despreading means and third combining means.
The despreading of a crosstalk vector is shown in Fig 9.
The despreader 203 despreads the received signal with a despreading code corresponding to an individual communication terminal.
In cooperative spread spectrum systems, the low SNR is typically overcome by despreading the signal.
Also, preferably, the first synchronization despreading sequence and the second synchronization despreading sequence are orthogonal.
Figure 19 is a block diagram of a receiver for receiving and despreading CDMA signals.
