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    • 2. 发明申请
    • DYNAMIC MODULATION DEPENDENT ON TRANSMISSION POWER
    • 动力调节依赖于传动力
    • WO2007074373A3
    • 2007-11-08
    • PCT/IB2006003760
    • 2006-12-22
    • NOKIA CORPNOKIA INCFREDERIKSEN FRANKMOGENSEN PREBEN EKOLDING TROELSTIRKKONEN OLAVHUGL KLAUS
    • FREDERIKSEN FRANKMOGENSEN PREBEN EKOLDING TROELSTIRKKONEN OLAVHUGL KLAUS
    • H04L1/00H04B7/005H04L27/26H04W52/42
    • H04L27/2608H04L5/023H04W52/42
    • Disclosed herein are apparatus, methods and computer program products for transmitting signals in different frequency sub-bands used in a particular cell of a cellular wireless communications system in accordance with a power sequence and for selecting modulation schemes to be used in transmitting the signals in the different frequency sub- bands in dependence on signal transmission power allocated to the sub-bands in the power sequence. In the power sequence, signals to be transmitted in at least one sub- band are allocated a higher signal transmission power level than signals to be transmitted in other sub-bands used in the particular cell of the cellular wireless communication system. The differing signal transmission power levels allocated to the different sub- bands typically results in different SINR for signals transmitted at the higher signal transmission power levels and signal transmitted at the lower signal transmission power levels, hi order to reduce the SINR difference between signals transmitted in the different sub-bands, modulation schemes are selected in dependence on the signal transmission power levels allocated to signals transmitted in the sub-bands.
    • 本文公开了用于根据功率序列在蜂窝无线通信系统的特定小区中使用的不同频率子带中发送信号的装置,方法和计算机程序产品,并且用于选择要在传输信号中使用的信号的调制方案 根据分配给功率序列中的子带的信号传输功率,不同的频率子带。 在功率序列中,要在至少一个子带中发送的信号被分配比在蜂窝无线通信系统的特定小区中使用的其他子带中要发送的信号更高的信号发射功率电平。 分配给不同子频带的不同信号传输功率电平通常会导致在较高信号传输功率电平下传输的信号和以较低信号传输功率电平传输的信号的不同SINR。为了减少传输的信号之间的SINR差异 根据分配给在子带中发送的信号的信号传输功率电平来选择不同的子带调制方案。
    • 4. 发明申请
    • PILOT STRUCTURE FOR MULTICARRIER TRANSMISSIONS
    • 多媒体传输的引导结构
    • WO2007036787A3
    • 2007-06-21
    • PCT/IB2006002681
    • 2006-09-27
    • NOKIA CORPNOKIA INCRINNE MIKA PTIRKKONEN OLAVHUGL KLAUS
    • RINNE MIKA PTIRKKONEN OLAVHUGL KLAUS
    • H04L27/26H04B7/04H04W52/32
    • H04B7/0669H04L5/0007H04L5/0023H04L5/0026H04L5/0048H04L5/005H04L5/0051H04L25/0224H04L2025/03802H04W52/325
    • A method, device, computer program product, integrated circuit, and system are described to dispose pilot sequences (for aiding a receiver in estimating a channel) in a frame structure that has subframes of sub-carriers and symbol positions. Locations of common pilot sequences are predetermined, and includes 1) in each subframe, a pilot sequence is disposed in a first symbol position for each of at least two staggered sub-carriers, and 2) in at least one subframe, at least one pilot sequence is disposed in other than the first symbol position and in a sub-carrier other than any of the at least two staggered sub- carriers. Dedicated pilot sequences, whose locations in the frame are not predetermined, are disposed in response to an indication of channel quality received over a wireless link. Common pilot sequences may relate to one or two transmit antennas, and dedicated pilot sequences may enable addition of third and fourth transmit antennas.
    • 描述了一种方法,设备,计算机程序产品,集成电路和系统,以在具有子载波和符号位置的子帧的帧结构中配置导频序列(用于帮助接收机估计信道)。 公共导频序列的位置是预定的,并且包括1)在每个子帧中,导频序列被布置在至少两个交错子载波中的每一个的第一符号位置中,以及2)在至少一个子帧中,至少一个导频 序列被布置在除了第一符号位置之外且在除了至少两个交错子载波中的任何一个以外的子载波中。 响应于通过无线链路接收的信道质量的指示,设置其帧中的位置不是预定的专用导频序列。 公共导频序列可以涉及一个或两个发射天线,并且专用导频序列可以实现第三和第四发射天线的添加。
    • 5. 发明申请
    • APPARATUS, METHOD AND COMPUTER PROGRAM PRODUCT PROVIDING FEEDBACK FOR CLOSED-LOOP WIDEBAND MTMO-OFDM SYSTEM
    • 用于闭环宽带MTMO-OFDM系统的装置,方法和计算机程序产品提供反馈
    • WO2008038091A2
    • 2008-04-03
    • PCT/IB2007002757
    • 2007-09-21
    • NOKIA CORPNOKIA INCTENG YONGTIRKKONEN OLAV
    • TENG YONGTIRKKONEN OLAV
    • H04L1/06
    • H04L1/0606H04L1/0687
    • In one exemplary aspect thereof the embodiments of this invention provide an apparatus that includes a wireless receiver configurable to receive resource units; a wireless transmitter configurable to transmit feedback information to a source of the received resource units; and a channel estimator and feedback generator coupled to the wireless receiver and to the wireless transmitter. The channel estimator and feedback generator is configurable to determine a weight for each of a first resource unit and a second resource unit that are received by the receiver spaced apart at least in frequency, to determine a weight for at least some of a plurality of resource units that are intermediate at least in frequency to the first and the second resource units, and to send feedback via the transmitter. The feedback includes an indication of the determined weight for the first and the second resource units using X bits for representing each of the indications of the determined weights, and further includes an indication of weights for each of the plurality of resource units using Y bits, where Y
    • 在其一个示例性方面,本发明的实施例提供一种装置,其包括可配置为接收资源单元的无线接收机; 无线发射机,其可配置为将反馈信息发送到所接收的资源单元的源; 以及耦合到无线接收器和无线发射器的信道估计器和反馈发生器。 信道估计器和反馈发生器可配置为确定由至少频率间隔开的接收机接收的第一资源单元和第二资源单元中的每一个的权重,以确定多个资源中的至少一些资源的权重 至少在第一和第二资源单元中频率中间的单元,并且经由发射机发送反馈。 反馈包括使用用于表示所确定的权重的每个指示的X位的第一和第二资源单元确定的权重的指示,并且还包括使用Y位的多个资源单元中的每一个的权重的指示, 其中Y