The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 28, 2012
Filed:
Dec. 01, 2008
Thord Hyllander, Solna, SE;
Leonard Rexberg, Hässelby, SE;
Jacob Österling, Järfälla, SE;
Vimar Björk, Göteborg, SE;
Tore Mikael André, Älvsjö, SE;
Torbjörn Gunnar Widhe, Mölndal, SE;
Daniel Larsson, Uppsala, SE;
Thord Hyllander, Solna, SE;
Leonard Rexberg, Hässelby, SE;
Jacob Österling, Järfälla, SE;
Vimar Björk, Göteborg, SE;
Tore Mikael André, Älvsjö, SE;
Torbjörn Gunnar Widhe, Mölndal, SE;
Daniel Larsson, Uppsala, SE;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
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.