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    • 15. 发明申请
    • DIGITAL BROADCAST SIGNALING METADATA
    • 数字广播信号元数据
    • WO2009053816A2
    • 2009-04-30
    • PCT/IB2008002817
    • 2008-10-17
    • NOKIA CORPNOKIA INCVARE JANIVESMA JUSSIJOKELA TERO
    • VARE JANIVESMA JUSSIJOKELA TERO
    • H04L5/0064H03M13/09H03M13/13H03M13/23H03M13/2707H04L5/0007H04L5/0023H04L5/0048H04L5/0053H04L5/0092H04L27/0008H04L27/0012H04L27/2604H04L27/2605H04L27/2655H04W48/08
    • Embodiments are directed to transmitting L1 pre-signaling information with predetermined modulation and code rate such that L1 pre-signaling information can be received without preliminary knowledge on the network. L1 pre-signaling information makes it possible to receive the L1 signaling information, data link layer information, and notification data that may have configurable code rates and modulation. Therefore, L1 pre-signaling information can be thought of as signaling metadata (i.e., information about other signaling information). L1 signaling is divided into pre-signaling and signaling parts. The pre-signaling part includes parameters used for receiving the L1 signaling information. L1 pre-signaling signaling enables the receiver to receive the signaling itself (L1 signaling and data link layer information) by informing the receiver about the type of modulation, coding, and the like, used to transmit the L1 signaling, data link layer, and notification information.
    • 实施例旨在以预定的调制和码率传输L1预信令信息,使得可以在没有网络的初步知识的情况下接收L1预信令信息。 L1预信令信息使得可以接收可能具有可配置码率和调制的L1信令信息,数据链路层信息和通知数据。 因此,L1预信令信息可以被认为是信令元数据(即关于其他信令信息的信息)。 L1信令分为前置信令和信令部分。 预信令部分包括用于接收L1信令信息的参数。 通过向接收方通知用于发送L1信令,数据链路层和调制信号的调制类型,编码等,L1预信令信令使得接收机能够接收信令本身(L1信令和数据链路层信息) 通知信息。
    • 17. 发明申请
    • HIERARCHICAL MODULATION FOR COMMUNICATION CHANNELS IN SINGLE-CARRIER FREQUENCY DIVISION MULTIPLE ACCESS
    • 单载波频段多通道通信信道分层调制
    • WO2008154506A1
    • 2008-12-18
    • PCT/US2008/066347
    • 2008-06-09
    • QUALCOMM IncorporatedMALLADI, Durga Prasad
    • MALLADI, Durga Prasad
    • H04L5/02H04L27/18H04L27/26H04L27/34
    • H04L27/2604H04L5/023H04L27/183H04L27/3488
    • System(s) and method(s) are provided to transmit simultaneously a first and a second communication channel in a single-carrier waveform format with disparate error rate requirements. First channel and second channel are coded individually to form an alphabet for a first and second constellation. Prior to transmission, bits of information of the first and second channels are modulated with a hierarchical modulation constellation is generated through a combination of a first a second constellation; each constellation is assigned a configurable weight (e.g., a "hierarchic weight") that is expressed in terms of a configurable energy ratio. The energy ratio determines the resilience of bits associated with the first and second channel. Bit mapping within the first and second constellation provides redundancy to mitigate error rate within each quadrant of the hierarchical constellation. Hierarchical modulation of more than two channel can be accomplished through the same principal of individual coding and constellation composition.
    • 提供了系统和方法,以不同的错误率要求以单载波波形格式同时传输第一和第二通信信道。 第一通道和第二通道被分别编码以形成用于第一和第二星座的字母表。 在发送之前,通过第一和第二星座的组合产生分层调制星座来调制第一和第二信道的信息比特; 分配每个星座具有可配置的权重(例如,“分级权重”),其以可配置的能量比表示。 能量比确定与第一和第二通道相关联的位的弹性。 第一和第二星座内的比特映射提供冗余以减轻分层星座的每个象限内的错误率。 可以通过单个编码和星座组成的相同原理来实现多于两个信道的分层调制。