Telefonaktiebolaget Lm Ericsson (Publ)

Thord Hyllander

Daniel Chen Larsson

Jacob Österling

Leonard Rexberg

Vimar Björk

Tore André

Daniel Larsson

Torbjörn Gunnar Widhe

Jacob ÖSterling

Vimar BJÖRK

Tore Mikael AndrÉ

Torbjörn Widhe

A method and base station for forming an OFDM signal from a baseband signal includes a partitioning unit configured to partition a block of baseband signal samples into sub-blocks. A sub-carrier mapper maps the sub-blocks onto adjacent sub-carrier blocks of an OFDM multi-carrier to form corresponding unprefixed OFDM symbols. A cyclic prefix adder adds a cyclic prefix to each mapped sub-block to form prefixed OFDM symbols. Phase compensations force the unprefixed OFDM symbol part of all subsequently up-converted prefixed OFDM symbols to start at the same phase. Up-converters up-convert the phase compensated prefixed OFDM symbols to respective radio frequency bands having center frequencies and bandwidths that preserve the OFDM multi-carrier structure. A combiner combines the up-converted phase compensated prefixed OFDM symbols into an OFDM signal.

Method and base station for orthogonal frequency division multiplexing (OFDM) signal processing

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Solna, Sweden

Thord Hyllander