Signal quality estimation for ofdma systems

Details Signal quality estimation for ofdma systems Signal quality estimation for ofdma systems

H - Electricity

04

B

H04B 17/00 (2006.01) H04L 27/26 (2006.01)

Patent

CA 2713318

Certain embodiments utilize raw signals to estimate channel quality, as contrasted to utilizing equalized signals or after channel estimation. For example, signal quality may be estimated by calculating powers of pilot sub-carriers and null sub-carriers of the raw signals. To mitigate channel effect, certain embodiments utilize first and/or second order differentiation schemes.

Certains modes de réalisation utilisent des signaux bruts pour estimer une qualité de canal, par opposition à lutilisation de signaux égalisés ou après une estimation de canal. Par exemple, la qualité du signal peut être estimée par le calcul des puissances des sous-porteuses pilotes et des sous-porteuses nulles des signaux bruts. Pour atténuer leffet de canal, certains modes de réalisation utilisent des méthodes de différentiation du premier et/ou du second ordre.

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