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Abstract

The invention relates to a communication system employing subchannel communication such as OFDM or multicode CDMA. A significant disadvantage of subchannel communication is the power variation of the transmitted signal. The invention provides a system and method with reduced power variation without compromising performance or increasing transmission bandwidth. According to the invention the information symbols to be transmitted on the individual subchannel are fed to encoders (809-815) which maps the information symbols into channel symbols by increasing the order of the symbols. The encoding is both in response to a forward error correction scheme and includes selection between redundant symbol values to reduce power variation of the combined signal. The channel symbols are fed to a modulator (309) and the modulated signal is transmitted. Preferably the encoder comprises a trellis coder jointly encoding the information symbols and compensation data set to reduce the power level variation.

The invention relates to a communication system employing subchannel communication such as OFDM or multicode CDMA. A significant disadvantage of subchannel communication is the power variation of the transmitted signal. The invention provides a system and method with reduced power variation without compromising performance or increasing transmission bandwidth. According to the invention the information symbols to be transmitted on the individual subchannel are fed to encoders (809-815) which maps the information symbols into channel symbols by increasing the order of the symbols. The encoding is both in response to a forward error correction scheme and includes selection between redundant symbol values to reduce power variation of the combined signal. The channel symbols are fed to a modulator (309) and the modulated signal is transmitted. Preferably the encoder comprises a trellis coder jointly encoding the information symbols and compensation data set to reduce the power level variation.

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Technology	Declaration Information			Specification Information	Explicitly Disclosed	Patent Type
Technology	Declaration Date	Declaration Reference	Declaring Company	Specification Number	Explicitly Disclosed	Patent Type
4G	29/02/2012	ISLD-201203-005	MOTOROLA INC	S1 TS Number: TS 136 201 Version No: Illustrative part: ---- Release: S2 TS Number: TS 136 300 Version No: Illustrative part: ---- Release: S3 TS Number: TS 136 322 Version No: Illustrative part: ---- Release: S4 TS Number: TS 136 440 Version No: Illustrative part: ---- Release: S5 TS Number: TS 136 441 Version No: Illustrative part: ---- Release: S6 TS Number: TS 136 442 Version No: Illustrative part: ---- Release: +5 -5	No	Family Member
4G,3G	29/02/2012	ISLD-201203-005	MOTOROLA INC	S1 TS Number: TS 123 246 Version No: Illustrative part: ---- Release: + -	No	Family Member
4G,3G,2G	29/02/2012	ISLD-201203-005	MOTOROLA INC	S1 TS Number: TS 122 146 Version No: Illustrative part: ---- Release: + -	No	Family Member

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Technologies

2G 3G 4G 5G

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SEP Database Augmented SEP Database

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Publication No	Technology	Declaration Information			Specification Information	Explicitly Disclosed	Patent Type
Publication No	Technology	Declaration Date	Declaration Reference	Declaring Company	Specification Number	Explicitly Disclosed	Patent Type
US7031397B1	4G	29/02/2012	ISLD-201203-005	MOTOROLA INC	S1 TS Number: TS 136 201 Version No: ---- Section No: Release : ---- S2 TS Number: TS 136 300 Version No: ---- Section No: Release : ---- S3 TS Number: TS 136 322 Version No: ---- Section No: Release : ---- S4 TS Number: TS 136 440 Version No: ---- Section No: Release : ---- S5 TS Number: TS 136 441 Version No: ---- Section No: Release : ---- S6 TS Number: TS 136 442 Version No: ---- Section No: Release : ---- +5 -5	Yes	Basis Patent
US7031397B1	4G,3G	29/02/2012	ISLD-201203-005	MOTOROLA INC	S1 TS Number: TS 123 246 Version No: ---- Section No: ---- Release : ---- + -	Yes	Basis Patent
US7031397B1	4G,3G,2G	29/02/2012	ISLD-201203-005	MOTOROLA INC	S1 TS Number: TS 122 146 Version No: ---- Section No: ---- Release : ---- + -	Yes	Basis Patent
EP1145573A2	4G	29/02/2012	ISLD-201203-005	MOTOROLA INC	S1 TS Number: TS 136 201 Version No: ---- Section No: Release : ---- S2 TS Number: TS 136 300 Version No: ---- Section No: Release : ---- S3 TS Number: TS 136 322 Version No: ---- Section No: Release : ---- S4 TS Number: TS 136 440 Version No: ---- Section No: Release : ---- S5 TS Number: TS 136 441 Version No: ---- Section No: Release : ---- S6 TS Number: TS 136 442 Version No: ---- Section No: Release : ---- +5 -5	No	Family Member
EP1145573A2	4G,3G	29/02/2012	ISLD-201203-005	MOTOROLA INC	S1 TS Number: TS 123 246 Version No: ---- Section No: ---- Release : ---- + -	No	Family Member
EP1145573A2	4G,3G,2G	29/02/2012	ISLD-201203-005	MOTOROLA INC	S1 TS Number: TS 122 146 Version No: ---- Section No: ---- Release : ---- + -	No	Family Member
EP1145573A3	4G	29/02/2012	ISLD-201203-005	MOTOROLA INC	S1 TS Number: TS 136 201 Version No: ---- Section No: Release : ---- S2 TS Number: TS 136 300 Version No: ---- Section No: Release : ---- S3 TS Number: TS 136 322 Version No: ---- Section No: Release : ---- S4 TS Number: TS 136 440 Version No: ---- Section No: Release : ---- S5 TS Number: TS 136 441 Version No: ---- Section No: Release : ---- S6 TS Number: TS 136 442 Version No: ---- Section No: Release : ---- +5 -5	No	Family Member
EP1145573A3	4G,3G	29/02/2012	ISLD-201203-005	MOTOROLA INC	S1 TS Number: TS 123 246 Version No: ---- Section No: ---- Release : ---- + -	No	Family Member
EP1145573A3	4G,3G,2G	29/02/2012	ISLD-201203-005	MOTOROLA INC	S1 TS Number: TS 122 146 Version No: ---- Section No: ---- Release : ---- + -	No	Family Member
EP1145573B1	4G	29/02/2012	ISLD-201203-005	MOTOROLA INC	S1 TS Number: TS 136 201 Version No: ---- Section No: Release : ---- S2 TS Number: TS 136 300 Version No: ---- Section No: Release : ---- S3 TS Number: TS 136 322 Version No: ---- Section No: Release : ---- S4 TS Number: TS 136 440 Version No: ---- Section No: Release : ---- S5 TS Number: TS 136 441 Version No: ---- Section No: Release : ---- S6 TS Number: TS 136 442 Version No: ---- Section No: Release : ---- +5 -5	No	Family Member
EP1145573B1	4G,3G	29/02/2012	ISLD-201203-005	MOTOROLA INC	S1 TS Number: TS 123 246 Version No: ---- Section No: ---- Release : ---- + -	No	Family Member
EP1145573B1	4G,3G,2G	29/02/2012	ISLD-201203-005	MOTOROLA INC	S1 TS Number: TS 122 146 Version No: ---- Section No: ---- Release : ---- + -	No	Family Member
GB2339514A	4G	29/02/2012	ISLD-201203-005	MOTOROLA INC	S1 TS Number: TS 136 201 Version No: ---- Section No: Release : ---- S2 TS Number: TS 136 300 Version No: ---- Section No: Release : ---- S3 TS Number: TS 136 322 Version No: ---- Section No: Release : ---- S4 TS Number: TS 136 440 Version No: ---- Section No: Release : ---- S5 TS Number: TS 136 441 Version No: ---- Section No: Release : ---- S6 TS Number: TS 136 442 Version No: ---- Section No: Release : ---- +5 -5	No	Family Member
GB2339514A	4G,3G	29/02/2012	ISLD-201203-005	MOTOROLA INC	S1 TS Number: TS 123 246 Version No: ---- Section No: ---- Release : ---- + -	No	Family Member
GB2339514A	4G,3G,2G	29/02/2012	ISLD-201203-005	MOTOROLA INC	S1 TS Number: TS 122 146 Version No: ---- Section No: ---- Release : ---- + -	No	Family Member
JP2002520961A	4G	29/02/2012	ISLD-201203-005	MOTOROLA INC	S1 TS Number: TS 136 201 Version No: ---- Section No: Release : ---- S2 TS Number: TS 136 300 Version No: ---- Section No: Release : ---- S3 TS Number: TS 136 322 Version No: ---- Section No: Release : ---- S4 TS Number: TS 136 440 Version No: ---- Section No: Release : ---- S5 TS Number: TS 136 441 Version No: ---- Section No: Release : ---- S6 TS Number: TS 136 442 Version No: ---- Section No: Release : ---- +5 -5	Yes	Family Member
JP2002520961A	4G,3G	29/02/2012	ISLD-201203-005	MOTOROLA INC	S1 TS Number: TS 123 246 Version No: ---- Section No: ---- Release : ---- + -	Yes	Family Member
JP2002520961A	4G,3G,2G	29/02/2012	ISLD-201203-005	MOTOROLA INC	S1 TS Number: TS 122 146 Version No: ---- Section No: ---- Release : ---- + -	Yes	Family Member
JP4294221B2	4G	29/02/2012	ISLD-201203-005	MOTOROLA INC	S1 TS Number: TS 136 201 Version No: ---- Section No: Release : ---- S2 TS Number: TS 136 300 Version No: ---- Section No: Release : ---- S3 TS Number: TS 136 322 Version No: ---- Section No: Release : ---- S4 TS Number: TS 136 440 Version No: ---- Section No: Release : ---- S5 TS Number: TS 136 441 Version No: ---- Section No: Release : ---- S6 TS Number: TS 136 442 Version No: ---- Section No: Release : ---- +5 -5	Yes	Family Member
JP4294221B2	4G,3G	29/02/2012	ISLD-201203-005	MOTOROLA INC	S1 TS Number: TS 123 246 Version No: ---- Section No: ---- Release : ---- + -	Yes	Family Member
JP4294221B2	4G,3G,2G	29/02/2012	ISLD-201203-005	MOTOROLA INC	S1 TS Number: TS 122 146 Version No: ---- Section No: ---- Release : ---- + -	Yes	Family Member
WO0003552A2	4G	29/02/2012	ISLD-201203-005	MOTOROLA INC	S1 TS Number: TS 136 201 Version No: ---- Section No: Release : ---- S2 TS Number: TS 136 300 Version No: ---- Section No: Release : ---- S3 TS Number: TS 136 322 Version No: ---- Section No: Release : ---- S4 TS Number: TS 136 440 Version No: ---- Section No: Release : ---- S5 TS Number: TS 136 441 Version No: ---- Section No: Release : ---- S6 TS Number: TS 136 442 Version No: ---- Section No: Release : ---- +5 -5	No	Family Member
WO0003552A2	4G,3G	29/02/2012	ISLD-201203-005	MOTOROLA INC	S1 TS Number: TS 123 246 Version No: ---- Section No: ---- Release : ---- + -	No	Family Member
WO0003552A2	4G,3G,2G	29/02/2012	ISLD-201203-005	MOTOROLA INC	S1 TS Number: TS 122 146 Version No: ---- Section No: ---- Release : ---- + -	No	Family Member
WO0003552A3	4G	29/02/2012	ISLD-201203-005	MOTOROLA INC	S1 TS Number: TS 136 201 Version No: ---- Section No: Release : ---- S2 TS Number: TS 136 300 Version No: ---- Section No: Release : ---- S3 TS Number: TS 136 322 Version No: ---- Section No: Release : ---- S4 TS Number: TS 136 440 Version No: ---- Section No: Release : ---- S5 TS Number: TS 136 441 Version No: ---- Section No: Release : ---- S6 TS Number: TS 136 442 Version No: ---- Section No: Release : ---- +5 -5	No	Family Member
WO0003552A3	4G,3G	29/02/2012	ISLD-201203-005	MOTOROLA INC	S1 TS Number: TS 123 246 Version No: ---- Section No: ---- Release : ---- + -	No	Family Member
WO0003552A3	4G,3G,2G	29/02/2012	ISLD-201203-005	MOTOROLA INC	S1 TS Number: TS 122 146 Version No: ---- Section No: ---- Release : ---- + -	No	Family Member

Publication No	Technology	Declaration Information			Specification Information				Explicitly Disclosed	Patent Type	Status	National Phase Entries
Publication No	Technology	Declaration Date	Declaration Reference	Declaring Company	Specification Information				Explicitly Disclosed	Patent Type	Status	National Phase Entries
-----	-----	-----	-----	-----	S1 TS Number: ----- Version No: ----- Section No:----- Release:----- + -				-----	-----	-----	-----

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Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.

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