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    • 3. 发明专利
    • Method to determine the number of data streams to be used in a mimo system
    • AU2006310608A1
    • 2007-05-10
    • AU2006310608
    • 2006-10-24
    • NOKIA SIEMENS NETWORKS GMBHFRAUNHOFER GES FORSCHUNG
    • SCHULZ EGONHAUSTEIN THOMASJUNGNICKEL VOLKERZIRWAS WOLFGANG
    • H04L1/00H04L1/06
    • The invention relates to a method to determine a transmission mode to be used at a MIMO-transmitter. The determination of an optimum transmission mode is done at the side of a MIMO-receiver. The receiver calculates for each stream of a maximum number of received streams an effective SINR-value for a given first linear dispersion code LDC. The SINR value of each stream is used to select, according to a desired BER target, a suitable modulation alphabet for each stream. A sum-rate is calculated over all streams and a first stream with a minimum effective SINR value is separated and is not considered furthermore. A linear dispersion code LDC with a smaller code rate than the first linear dispersion code LDC is selected and SINR-values for the remaining N-1 streams are calculated. A new sum-rate is obtained accordingly. In case that the new sum rate of the remaining N-1 streams is smaller than the sum rate of N streams, the sum-rate calculation is terminated. In all other cases, the step of separation of a stream with smallest effective SINR, the step of selection of a linear dispersion code LDC with a smaller code rate than the linear dispersion code LDC before and the step of calculation of SINR value for remaining streams are repeated accordingly. The most suitable code rate of the linear dispersion code LDC is selected after the termination and the code rate is reported to the transmitter, together with assigned quantized effective SINR value of each stream, to allow a final decision about a optimum transmission mode at the transmitter.
    • 4. 发明专利
    • Method to determine the number of data streams to be used in a mimo system
    • AU2006310608A8
    • 2008-05-29
    • AU2006310608
    • 2006-10-24
    • FRAUNHOFER GES FORSCHUNGNOKIA SIEMENS NETWORKS GMBH
    • SCHULZ EGONHAUSTEIN THOMASJUNGNICKEL VOLKERZIRWAS WOLFGANG
    • H04L1/00H04L1/06
    • The invention relates to a method to determine a transmission mode to be used at a MIMO-transmitter. The determination of an optimum transmission mode is done at the side of a MIMO-receiver. The receiver calculates for each stream of a maximum number of received streams an effective SINR-value for a given first linear dispersion code LDC. The SINR value of each stream is used to select, according to a desired BER target, a suitable modulation alphabet for each stream. A sum-rate is calculated over all streams and a first stream with a minimum effective SINR value is separated and is not considered furthermore. A linear dispersion code LDC with a smaller code rate than the first linear dispersion code LDC is selected and SINR-values for the remaining N-1 streams are calculated. A new sum-rate is obtained accordingly. In case that the new sum rate of the remaining N-1 streams is smaller than the sum rate of N streams, the sum-rate calculation is terminated. In all other cases, the step of separation of a stream with smallest effective SINR, the step of selection of a linear dispersion code LDC with a smaller code rate than the linear dispersion code LDC before and the step of calculation of SINR value for remaining streams are repeated accordingly. The most suitable code rate of the linear dispersion code LDC is selected after the termination and the code rate is reported to the transmitter, together with assigned quantized effective SINR value of each stream, to allow a final decision about a optimum transmission mode at the transmitter.
    • 5. 发明专利
    • BRPI0618091A2
    • 2011-08-16
    • BRPI0618091
    • 2006-10-24
    • NOKIA SIEMENS NETWORKS GMBHFRAUNHOFER GES FORSCHUNG
    • HAUSTEIN THOMASJUNGNICKEL VOLKERSCHULZ EGONZIRWAS WOLFGANG
    • H04L1/00H04L1/06
    • The invention relates to a method to determine a transmission mode to be used at a MIMO-transmitter. The determination of an optimum transmission mode is done at the side of a MIMO-receiver. The receiver calculates for each stream of a maximum number of received streams an effective SINR-value for a given first linear dispersion code LDC. The SINR value of each stream is used to select, according to a desired BER target, a suitable modulation alphabet for each stream. A sum-rate is calculated over all streams and a first stream with a minimum effective SINR value is separated and is not considered furthermore. A linear dispersion code LDC with a smaller code rate than the first linear dispersion code LDC is selected and SINR-values for the remaining N-1 streams are calculated. A new sum-rate is obtained accordingly. In case that the new sum rate of the remaining N-1 streams is smaller than the sum rate of N streams, the sum-rate calculation is terminated. In all other cases, the step of separation of a stream with smallest effective SINR, the step of selection of a linear dispersion code LDC with a smaller code rate than the linear dispersion code LDC before and the step of calculation of SINR value for remaining streams are repeated accordingly. The most suitable code rate of the linear dispersion code LDC is selected after the termination and the code rate is reported to the transmitter, together with assigned quantized effective SINR value of each stream, to allow a final decision about a optimum transmission mode at the transmitter.
    • 6. 发明专利
    • METHOD TO DETERMINE THE NUMBER OF DATA STREAMS TO BE USED INA MIMO SYSTEM
    • CA2627785A1
    • 2007-05-10
    • CA2627785
    • 2006-10-24
    • NOKIA SIEMENS NETWORKS GMBHFRAUNHOFER GES FORSCHUNG
    • HAUSTEIN THOMASZIRWAS WOLFGANGSCHULZ EGONJUNGNICKEL VOLKER
    • H04L1/00H04L1/06
    • The invention relates to a method to determine a transmission mode to be used at a MIMO-transmitter. The determination of an optimum transmission mode is done at the side of a MIMO-receiver. The receiver calculates for each stream of a maximum number of received streams an effective SINR-value for a given first linear dispersion code LDC. The SINR value of each stream is used to select, according to a desired BER target, a suitable modulation alphabet for each stream. A sum-rate is calculated over all streams and a first stream with a minimum effective SINR value is separated and is not considered furthermore. A linear dispersion code LDC with a smaller code rate than the first linear dispersion code LDC is selected and SINR-values for the remaining N-1 streams are calculated. A new sum-rate is obtained accordingly. In case that the new sum rate of the remaining N-1 streams is smaller than the sum rate of N streams, the sum-rate calculation is terminated. In all other cases, the step of separation of a stream with smallest effective SINR, the step of selection of a linear dispersion code LDC with a smaller code rate than the linear dispersion code LDC before and the step of calculation of SINR value for remaining streams are repeated accordingly. The most suitable code rate of the linear dispersion code LDC is selected after the termination and the code rate is reported to the transmitter, together with assigned quantized effective SINR value of each stream, to allow a final decision about a optimum transmission mode at the transmitter.
    • 7. 发明专利
    • AT476039T
    • 2010-08-15
    • AT07022968
    • 2007-11-27
    • NOKIA SIEMENS NETWORKS GMBHFRAUNHOFER GES FORSCHUNG
    • HALFMANN RUEDIGERHAUSTEIN THOMAS DRIBING ANDREASZIRWAS WOLFGANG
    • H04L12/56H04W4/00
    • The invention relates to a wireless telecommunication system including at least one Base Station (BS) for communicating with at least one multihop Relay Node (RN) using a wireless link (10) of a first type and with at least one local user equipment unit (UE) located within a range of the base station (BS) using at least one wireless link (12) of a second type, wherein the wireless link (10) of the first type is used to transmit a combined data flow encapsulating multiple individual data flows relating to different services and/or remote user equipment (UE) units. In order to enable a global fair scheduling, the base station (BS) is further configured to receive at least one local fairness parameter from the multihop relay node (RN), said local fairness parameter representing a fairness of the distribution of radio resources of the relay node (RN) over the individual data flows in the combined data flow and to execute a global fair scheduling procedure for determining a fair distribution of available radio resources of the base station (BS) over said at least one wireless link (10) of the first type and said at least one wireless link (12) of the second type, wherein the local fairness parameter is used as a parameter in said global fair scheduling procedure.