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How much PAR to bring to the party?

Författare:
Publiceringsår: 2002
Språk: Engelska
Publikation/Tidskrift/Serie: Proceedings of the 5th Nordic Signal Processing Symposium,
Dokumenttyp: Konferensbidrag

Sammanfattning

Reducing Peak-to-Average power Ratios (PAR) is an established research topic that has now begun to find its way into products. This gives rise to new questions of dimensioning. Here we address how much PAR reduction that

should be applied in a practical system. We demonstrate

that the amount of PAR reduction can be found with the

appropriate system models. This is applied to the tonereservation PAR reduction method in an ADSL system.

In some frequency regions, the SNR is in practice often

limited by the dynamic of the transmitter’s analog frontend. Other frequency regions are strongly attenuated by the channel and contribute very little to the system’s capacity. Using multicarrier modulation, we address how

much of the spectrum that could be used to improve the

SNR in the other regions by reducing the amplitude swing

of the transmit signal.

Nyckelord

  • Electrical Engineering, Electronic Engineering, Information Engineering

Övriga

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