Method and apparatus for multi-carrier frequency division multiplexing transmission

摘要

A general frequency division multiplex (GFDM) transmission system is proposed. Vacant frequency ranges are detected and subsequently used for transmission, wherein a single carrier transmission system with cyclic prefixing is deployed. A corresponding transmitter and receiver are disclosed.

主权项

1. A transmitter for data transmission by a frequency division multiplexing (FDM) method, comprising:
the transmitter being adapted and configured to: detect vacant frequency ranges in a plurality of allocated frequency ranges of a transmission frequency band, define a single center frequency for each of said detected vacant frequency ranges as a divisional multiplex carrier frequency, and transmit information about said detected vacant frequency ranges and defined center frequencies to a receiver through an established communication channel, said transmitter further comprising:
digital means for channel encoding an incoming stream of bits and for mapping the channel encoded bits to symbols, wherein the mapping is individual per carrier frequency;digital mapping means for mapping said symbols to the defined carrier frequencies;a plurality of parallel processing branches coupled to said digital mapping means, each branch comprising means for adding a cyclic prefix to a symbol, means for digital pulse shaping a symbol, wherein the pulse shaping is individual per carrier frequency, thus producing non-orthogonal carriers, and a complex multiplier for shifting a symbol to carrier frequencies;a complex adder for adding symbols processed by said plurality of parallel branches thus producing a single digital transmit signal; andmeans for digital-to-analogue converting, upconverting and amplifying the single transmit signal for transmission.