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    • 3. 发明申请
    • MULTIPLE RECEIVER AGGREGATION (MRA) WITH DIFFERENT DATA RATES FOR IEEE 802.11N
    • 具有不同数据速率的多接收机集成(MRA),适用于IEEE 802.11N
    • WO2005112355A1
    • 2005-11-24
    • PCT/IB2005/051568
    • 2005-05-12
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.OTAL, BegonyaHABETHA, JoergDALMASES, FrancescLI, Pen C.GHOSH, Monisha
    • OTAL, BegonyaHABETHA, JoergDALMASES, FrancescLI, Pen C.GHOSH, Monisha
    • H04L12/28
    • H04W28/06H04W48/08H04W52/0216H04W52/0219H04W64/00H04W84/12Y02D70/142
    • Method, frame definitions (300, 400, 500, 700, 800, 1000, 1200, 1300, 1400) and system for transmission of an aggregation of packets which includes a plurality of Medium Access Control (MAC) Protocol Units (MPDUs) or PLCP (Physical Layer Convergence Protocol) Protocol Data Units (PPDUs) intended for one or several receivers and transmitted at one or several different Physical (PHY) rates. In some aspects of the invention, a preamble, rsp.mid-amble (415.i, 515.i, 715.i, 815.i, 1015.i, 1215.i, 1315.i) is transmitted in-between each or between multiples of MPDUs or PPDUs allowing receiver devices to go into sleep mode and wake-up during the aggregate or packet burst. Furthermore, information is transmitted at the beginning of the aggregate/packet burst, which allows devices to deduce the position of MPDUs/PPDUs or multiples of MPDUs/PPDUs in the aggregate. MPDUs or PPDUs are grouped in order to enable efficient sleep times of the receiving devices. The receiving devices decode the information at the beginning of the aggregate/burst, fall into sleep-mode and wake up shortly before their packets have to be received.
    • 方法,帧定义(300,400,500,700,800,1000,12200,1300,1400)以及用于传输分组聚合的系统,包括多个媒体接入控制(MAC)协议单元(MPDU)或PLCP (物理层汇聚协议)协议数据单元(PPDU),用于一个或多个接收机,并以一个或多个不同的物理(PHY)速率传输。 在本发明的一些方面,前导码rsp.mid-amble(415.i,515.i,715.i,815.i,1015.i,1215.i,1315.i)在每个 或在MPDU或PPDU之间的多个之间,允许接收机设备进入睡眠模式并在聚合或分组突发期间唤醒。 此外,在聚合/分组突发的开始处发送信息,这允许设备推断MPDU / PPDU的位置或MPDU / PPDU的倍数。 MPDU或PPDU被分组以便实现接收设备的有效睡眠时间。 接收设备在聚合/突发的开始处对信息进行解码,在分组必须被接收之前不久就会进入休眠模式并唤醒。
    • 5. 发明申请
    • A BACKWARD COMPATIBLE TRANSMITTER DIVERSITY SCHEME FOR USE IN AN OFDM COMMUNICATION SYSTEM
    • 在OFDM通信系统中使用的后向兼容发射机多路径方案
    • WO2004054164A1
    • 2004-06-24
    • PCT/IB2003/005808
    • 2003-12-08
    • KONINKLIJKE PHILIPS ELECTRONICS N.V.GHOSH, MonishaOUYANG, Xuemei
    • GHOSH, MonishaOUYANG, Xuemei
    • H04L1/06
    • H04B7/06H04L1/0041H04L1/0071H04L1/06H04L27/2602H04L27/2626
    • Disclosed is a system and method for providing backward compatible transmitter diversity in an orthogonal frequency division modulated (OFDM) communication system. According to one aspect of the invention, a method for providing backward compatible transmitter diversity includes the steps of: receiving an input data bit stream; transforming it into an OFDM symbol stream comprised of even and odd symbols; dividing the OFDM symbol stream into a first symbol sub-stream and a second symbol sub-stream; processing the first symbol sub-stream by a first processing block to output a first processed symbol sub-stream; processing the second symbol sub-stream by a second processing block to output a second processed symbol sub-stream; transmitting the first processed symbol sub-stream from a first diversity antenna; and transmitting the second processed symbol sub-stream from a second diversity antenna and both are transmitted over non-overlapping frequencies.
    • 公开了一种用于在正交频分调制(OFDM)通信系统中提供向后兼容的发射机分集的系统和方法。 根据本发明的一个方面,一种用于提供向后兼容的发射机分集的方法包括以下步骤:接收输入数据比特流; 将其转换成由偶数和奇数符号组成的OFDM符号流; 将OFDM符号流划分为第一符号子流和第二符号子流; 通过第一处理块处理第一符号子流以输出第一处理符号子流; 通过第二处理块处理所述第二符号子流,以输出第二处理符号子流; 从第一分集天线发射所述第一处理符号子流; 并且从第二分集天线发送第二处理符号子流,并且在非重叠频率上发送二者。
    • 8. 发明申请
    • A METHOD AND SYSTEM FOR ENABLING MULTIBAND TRANSMISSION IN WIRELESS SYSTEMS
    • 一种在无线系统中实现多载波传输的方法和系统
    • WO2012004737A2
    • 2012-01-12
    • PCT/IB2011052964
    • 2011-07-05
    • KONINKL PHILIPS ELECTRONICS NVWANG JIANFENGGHOSH MONISHA
    • WANG JIANFENGGHOSH MONISHA
    • H04W72/04
    • H04W72/0446H04L5/0005H04W28/26
    • A method (900) for medium access reservation in a multiband wireless network comprises determining available slots (220) for reservation in a superframe (210) for reservation across multiple channels (S910); generating channel reservation protocol (CRP) availability information element (IE) (310) to indicate the available slots on a main channel; generating one or more Extended- Channel CRP availability IEs (500) to indicate the available slots on one or more respective extended channels (S920); exchanging the CRP availability IE and the Extended-Channel CRP availability IEs between a receiving device and a transmitting device (S930); and generating a Multiband CRP IE (600) to reserve slots that are available on the receiving device and the transmitting device (S940).
    • 一种用于多频带无线网络中的媒体接入预约的方法(900)包括:确定用于超帧(210)中用于多个信道预留的可用时隙(220)(S910)。 产生信道预留协议(CRP)可用性信息元素(IE)(310)以指示主信道上的可用时隙; 生成一个或多个扩展信道CRP可用性IE(500)以指示一个或多个相应扩展信道上的可用时隙(S920); 在接收设备和发送设备之间交换CRP可用性IE和扩展信道CRP可用性IE(S930); 以及生成多频段CRP IE(600)以预留在接收设备和发送设备上可用的时隙(S940)。
    • 9. 发明申请
    • INTEGER SPREADING ROTATION MATRICES FOR QAM CONSTELLATIONS AND ITS APPLICATION TO DECODE-REMODULATE-FORWARD COOPERATIVE COMMUNICATION STRATEGY
    • QAM协议的整体扩展旋转矩阵及其对解码前向合作通信策略的应用
    • WO2007069172A3
    • 2010-09-10
    • PCT/IB2006054720
    • 2006-12-08
    • KONINKL PHILIPS ELECTRONICS NVYANG JUNGHOSH MONISHA
    • YANG JUNGHOSH MONISHA
    • H04L27/26H04B7/02H04L1/06H04L27/38
    • H04B7/026H04B7/0848H04B7/15592H04L27/2626H04L27/3405H04L27/3483
    • Diversity techniques are commonly used in wireless communications to combat multi-path fading. Recent interests in ultra -wideband technology focus on multi-band OFDM systems that can explore the high diversity due to the independent frequency bands. To achieve full diversity with high data rate, a system (800), apparatus (500) and method that uses coded modulation with spreading rotation of transmitted signals. A 2x2 integer rotation matrix for QAM signals, 3x3 and 4x4 integer rotation matrices for QAM signals are provided. Compared with the non -regular QAM shape for real rotation matrices, each of these integer rotation matrices makes the regular QAM shape after rotation. The systematic design of these spreading matrices can be used to simplify the receiver structure such as simplified ML, MMSE and ZF, and then reduce their decoding complexity. Further, the present invention achieves cooperative diversity not only from distributed users but also from the signal space diversity of each user. An embodiment is provided for a cooperative system (100) in which different rows of integer rotation matrices are used by a source and relays as a modulation scheme to increase cooperative diversity.
    • 无线通信中通常使用分集技术来对抗多径衰落。 最近对超宽带技术的兴趣集中在可以探索由独立频带引起的高分集的多频带OFDM系统。 为了实现具有高数据速率的完全分集,使用传输信号的扩展旋转的编码调制的系统(800),装置(500)和方法。 提供了用于QAM信号的2x2整数旋转矩阵,用于QAM信号的3x3和4x4整数旋转矩阵。 与实际旋转矩阵的不规则QAM形状相比,这些整数旋转矩阵中的每一个使得旋转后具有规则的QAM形状。 这些扩展矩阵的系统设计可以用于简化接收机结构,如简化的ML,MMSE和ZF,然后降低它们的解码复杂度。 此外,本发明不仅从分布式用户获得协作分集,而且实现了来自每个用户的信号空间分集的协作分集。 提供了一种用于协作系统(100)的实施例,其中由源和中继使用不同行的整数旋转矩阵作为调制方案以增加协作分集。