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    A SPACE TIME LABELLING TECHNIQUE FOR WIRELESS COMMUNICATION SYSTEMS
    1.
    发明公开
    A SPACE TIME LABELLING TECHNIQUE FOR WIRELESS COMMUNICATION SYSTEMS 审中-公开
    无线通信系统的空时标记技术

    公开(公告)号：EP3314796A1

    公开(公告)日：2018-05-02

    申请号：EP16735707.8

    申请日：2016-06-28

    申请人： University Of Kwazulu-Natal

    发明人： XU, Hongjun ,  GOVINDASAMY, Kyle

    IPC分类号： H04L1/06 ,  H04L27/34

    CPC分类号： H04L1/0625 ,  H04L1/0057 ,  H04L1/0643 ,  H04L1/1614 ,  H04L27/34 ,  H04L27/3477

    摘要： A space time labelling technique for wireless communication systems is provided. A transmitter for implementing the technique includes a first bit mapper and a second bit mapper which is different to the first bit mapper and first and second transmitters. A processor is connected to the first and second mappers and the first and second transmitters and controls these to receive two bit streams and simultaneously feed these into the first mapper and the second mapper. The first mapper maps these into first and second mapped bit streams and the second mapper maps these into third and fourth mapped bit streams which are different from the first and second mapper bit streams. The first mapped bit stream is transmitted in a first time slot via the first transmitter and the second mapped bit stream is transmitted in the first time slot via the second transmitter. The third mapped bit stream is transmitted in a second time slot via the second transmitter and finally the fourth mapped bit stream is transmitted in a second time slot via the first transmitter.

    USF CODING
    2.
    发明公开
    USF CODING 有权
    USF编码

    公开(公告)号：EP2137922A2

    公开(公告)日：2009-12-30

    申请号：EP08826986.5

    申请日：2008-03-21

    申请人： Marvell DSPC LTD.

    发明人： SPENCER, Paul, S.

    IPC分类号： H04L27/34

    CPC分类号： H04L27/3477 ,  H04L1/0071 ,  H04L1/0072 ,  H04W72/1289

    摘要： Systems and methods are provided for transmitting and receiving an uplink state flag (USF) in a cellular network. A base station may transmit the USF to plurality of mobile stations that share the same frequency channel, and each mobile station can use the USF to determine whether that mobile station can transmit data in an upcoming uplink time period. The base station can encode the USF bits into a plurality of encoded USF symbols, where the encoded USF symbols may be selected from corner signal points in a QAM signal constellation set or from signal points adjacent to the corners of a QAM signal constellation set. The base station can interleave the encoded USF symbols and modulate the encoded USF symbols for transmission using the signal constellation set. A mobile station that can communication with the base station can include a corresponding receiver, de-interleaver, and decoder.

    Synchronization scheme for a digital communications system
    4.
    发明公开
    Synchronization scheme for a digital communications system 失效
    在einem digitalenÜbertragungssystem中的Synchronisierungsplanschema zur Verwendung。

    公开(公告)号：EP0553995A1

    公开(公告)日：1993-08-04

    申请号：EP93300358.4

    申请日：1993-01-20

    申请人： AT&T Corp.

    发明人： Sorbara, Massimo ,  Werner, Jean-Jacques

    IPC分类号： H04L27/34 ,  H04J3/07

    CPC分类号： H04L27/3477 ,  H04J3/07

    摘要： A synchronization scheme for a digital communications system wherein customer data is connected to a synchronous communications network utilizes auxiliary symbols (403-406) to provide frame synchronization. Each such auxiliary symbol lies outside of a conventional symbol constellation and is only used to represent framing information. Variations of the customer data rate relative to an expected rate are compensated for by the use of stuff and delete bits in each frame. These bits can be either customer data bits or ancillary bits depending on the direction of this variation. Advantageously, the auxiliary symbols also provide a determination of whether the stuff and delete bits in any frame are customer data or ancillary bits.

    摘要翻译： 数字通信系统的同步方案，其中客户数据连接到同步通信网络利用辅助符号（403-406）来提供帧同步。 每个这样的辅助符号位于常规符号星座之外，并且仅用于表示成帧信息。 客户数据速率相对于预期速率的变化通过使用每个帧中的填充和删除位来补偿。 根据该变化的方向，这些位可以是客户数据位或辅助位。 有利地，辅助符号还提供任何帧中的填充和删除位是客户数据还是辅助位的确定。

    Inband coding of secondary data
    5.
    发明公开
    Inband coding of secondary data 失效
    二次数据的输入编码

    公开(公告)号：EP0459058A3

    公开(公告)日：1993-01-20

    申请号：EP90313759.4

    申请日：1990-12-17

    申请人： AT&T Corp.

    发明人： Betts, William Lewis ,  Bottoms, Stanley

    IPC分类号： H04L27/34

    CPC分类号： H04L27/3477

    摘要： A modem which represents the transmitted primary data stream using signal points selected via a trellis code is provided with the further capability of transmitting secondary data. In particular, a standard constellation of signal points is expanded to include a number of signal points which is greater than that needed to transmit the primary data. Particular primary data word values are representable by either of a predetermined pair of signal points associated with that value--one signal point of the pair (A4,B4,C4,D4) being a standard signal point and the other (A5,B5,C5 D5) being an expanded signal point. The specific one of the two signal points of the pair that is transmitted at any given time is chosen as a function of whether the value of the next bit in the secondary data stream waiting to be transmitted is a "0" or a "1". The location of each expanded signal point in the constellation is selected such that its distance from the nearest signal point in the trellis code subset of its associated standard signal point is substantially at least as great as the minimum distance between any two signal points in that subset.

    TCM scheme with fractional bit rates, framing signals and constellation shaping
    7.
    发明公开
    TCM scheme with fractional bit rates, framing signals and constellation shaping 失效
    具有分数比特率的TCM方案，成帧信号和星座成形

    公开(公告)号：EP0836305A3

    公开(公告)日：1998-08-26

    申请号：EP98200056.4

    申请日：1992-03-27

    申请人： BRITISH TELECOMMUNICATIONS public limited company

    发明人： Brownlie, John David ,  Williams, Richard Guy Carrington

    IPC分类号： H04L27/34

    CPC分类号： H04L27/3477 ,  H04L27/3411 ,  H04L27/3416

    摘要： Data are transmitted using quadrature amplitude modulation to select for transmission symbols from two (or more) different signal point constellations. In one aspect of the invention, constellation-switching is employed within frames of A symbols, where A is not a power of two. In another aspect, constellation switching is used to facilitate frame synchronisation. Trellis shaping (where redundancy is introduced and selection of constellation "regions" performed (206) over a number of symbols so as to minimise transmitted power) is employed; switching (205, 209) is provided so that power information (from stores (207, 208)) is available appropriate to the constellation in use for each respective symbol. Synchronisation may alternatively be provided by substitution outside the power control loop, of a symbol from an outer region for one selected from an inner region of a constellation.

    摘要翻译： 使用正交幅度调制来传输数据以从两个（或更多）不同的信号点星座选择传输符号。 在本发明的一个方面，在A符号的帧内采用星座切换，其中A不是2的幂。 另一方面，星座切换被用来促进帧同步。 网格整形（其中引入冗余度并且在多个符号上执行（206）星座“区域”的选择以便最小化发射功率）; 提供切换（205,209），使得适用于每个相应符号使用的星座的功率信息（来自商店（207,208））可用。 备选地，可以通过在功率控制环外部替换来自外部区域的符号来提供同步，该外部区域用于从星座的内部区域中选择的一个。

    Side-channel communications in simultaneous voice and data transmission
    9.
    发明公开
    Side-channel communications in simultaneous voice and data transmission 失效
    Seitenkanalkommunikation bei gleichzeitiger Sprach- undDatenübertragung。

    公开(公告)号：EP0653871A1

    公开(公告)日：1995-05-17

    申请号：EP94308076.2

    申请日：1994-11-02

    申请人： AT&T Corp.

    发明人： Bremer, Gordon ,  Ko, Kenneth David ,  Holmquist, Kurt Ervin ,  Souders, Keith Alan

    IPC分类号： H04M11/06 ,  H04L27/34

    CPC分类号： H04M11/06 ,  H04L27/3477 ,  H04Q2213/13034 ,  H04Q2213/13103 ,  H04Q2213/13106 ,  H04Q2213/13174 ,  H04Q2213/13199 ,  H04Q2213/13201 ,  H04Q2213/13204 ,  H04Q2213/13213 ,  H04Q2213/13216 ,  H04Q2213/13292 ,  H04Q2213/1332

    摘要： In a simultaneous voice and data communication system, a stream of signal points is partitioned into a plurality of symbol blocks, each symbol block including a data segment and a control segment. The data segment carries information from a user, i.e., user data, while the control segment provides control information. A voice signal is then added to at least a portion, or all, of the signal points of each symbol block to provide for simultaneous voice and data transmission to an opposite endpoint. The control information may represent information from a secondary data source, and/or may include information about the characteristics of the succeeding block, e.g., the user data rate, and information pertaining to characteristics of the communications channel.

    摘要翻译： 在同时的语音和数据通信系统中，将信号点流划分为多个符号块，每个符号块包括数据段和控制段。 当控制段提供控制信息时，数据段承载来自用户的信息，即用户数据。 然后，语音信号被添加到每个符号块的信号点的至少一部分或全部以提供同时的语音和数据传输到相对端点。 控制信息可以表示来自辅助数据源的信息，和/或可以包括关于后续块的特征的信息，例如用户数据速率，以及与通信信道的特征有关的信息。