Receiver and method for processing radio signals using soft...

H - Electricity – 04 – L

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

H04L 25/02 (2006.01) H04B 1/707 (2011.01) H04L 1/00 (2006.01) H04L 25/03 (2006.01) H04L 25/06 (2006.01) H04L 27/00 (2006.01) H04L 27/227 (2006.01) H04L 27/34 (2006.01) H04L 27/38 (2006.01)

Patent

CA 2728052

A receiver and method for receiving and processing a sequence of transmitted symbols in a digital communication system utilizing soft pilot symbols. A set of soft pilot symbols are transmitted with higher reliability than the remaining symbols in the sequence by modulating the soft pilot symbols with a lower order modulation such as BPSK or QPSK while modulating the remaining symbols with a higher order modulation such as 16QAM or 64QAM. The receiver knows the modulation type and location (time/frequency/code) of the soft pilot symbols, and demodulates them first. The receiver uses the demodulated soft pilot symbols as known symbols to estimate parameters of the received radio signal. Unlike traditional fixed pilots, the soft pilots still carry some data. Additionally, the soft pilots are particularly helpful in establishing the amplitude reference essential in demodulating the higher order modulation symbols.

La présente invention concerne un récepteur et un procédé servant à recevoir et à traiter une séquence de symboles transmis dans un système de communication numérique utilisant des symboles pilotes logiciels. Un ensemble des symboles pilotes logiciels est transmis avec une fiabilité supérieure à celle des symboles restants dans la séquence grâce à la modulation des symboles pilotes logiciels avec une modulation dordre inférieur tel que BPSK ou QPSK, tout en modulant les symboles restants avec une modulation dordre supérieur tel que 16QAM ou 64QAM. Le récepteur connaît le type de modulation et lemplacement (temps/fréquence/code) des symboles pilotes logiciels, et les démodule en premier. Le récepteur utilise les symboles pilotes logiciels démodulés en tant que symboles connus pour estimer les paramètres du signal radio reçu. A la différence des pilotes fixes traditionnels, les pilotes logiciels transportent encore des données. De plus, les pilotes logiciels sont particulièrement utiles pour établir la référence damplitude essentielle à la démodulation des symboles de modulation dordre supérieur.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Receiver and method for processing radio signals using soft... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Receiver and method for processing radio signals using soft..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Receiver and method for processing radio signals using soft... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1461136

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.