Radio transmitter apparatus
AssigneeCambridge Silicon Radio Limited
InventorOlivier Seller
Life of this patent
Estimating the term…
Abstract
Radio transmitter apparatus for transmitting data over a radio channel, the apparatus comprising an encoder for encoding the data to be transmitted to generate a first symbol, a processor for calculating from the first symbol a second symbol, a modulator for modulating the first symbol onto a primary carrier in a primary frequency band and for modulating the second symbol onto one or more secondary carriers in one or more secondary frequency bands and a transmitter for transmitting the primary carrier and the one or more secondary carriers over the radio channel, wherein the one or more secondary frequency bands are selected such that if aliasing occurs in a receiver receiving the signal an alias associated with the one or more modulated secondary carriers appears in the received primary frequency band.
Claims17
A Radio transmitter apparatus for transmitting data over a radio channel, the apparatus comprising:
- an encoder for encoding the data to be transmitted to generate a first symbol;
- a processor for calculating from the first symbol a second symbol;
- a modulator for modulating the first symbol onto a primary carrier in a primary frequency band and for modulating the second symbol onto one or more secondary carriers in one or more secondary frequency bands;
- and
- a transmitter for transmitting a signal comprising the modulated primary carrier and the one or more modulated secondary carriers over the radio channel,
- wherein the one or more secondary frequency bands are selected such that if aliasing occurs in a receiver receiving the signal an alias associated with the one or more modulated secondary carriers appears in the received primary frequency band.
A method, implemented in a transmitter, of transmitting data over a radio channel, the method comprising encoding the data to be transmitted to generate a first symbol, calculating from the first symbol a second symbol, modulating the first symbol onto a primary carrier in a primary frequency band, modulating the second symbol onto one or more secondary carriers in one or more secondary frequency bands and transmitting the modulated primary carrier and the one or more modulated secondary carriers over the radio channel, wherein the one or more secondary frequency bands are selected such that if aliasing occurs in a receiver receiving the signal an alias associated with the one or more modulated secondary carriers appears in the received primary frequency band.
Dependencies are inferred from the claim text.