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    • 13. 发明申请
    • FIXED SUBSCRIBER LOOP RADIO COMMUNICATIONS APPARATUS AND SYSTEM
    • 固定订户无线电通信设备和系统
    • WO1996013948A1
    • 1996-05-09
    • PCT/EP1995004131
    • 1995-10-21
    • ALCATEL N.V.ALCATEL STANDARD ELECTRICA S.A.FERRERO LOPEZ, Miguel
    • ALCATEL N.V.ALCATEL STANDARD ELECTRICA S.A.
    • H04Q07/20
    • H04W84/14
    • Radio access communications system in the fixed subscriber loop (CEB, EB, ATR) providing access for a set of subscriber terminals (TE) to a fixed telephone network (RTF). This communications system establishes an audio channel link, in addition to that for signalling, over which pass, as information in the voice band, the tone signals associated with the call control signals pertaining to the fixed telephone network (RTF) and the dialling signals generated by the subscriber terminals (TE) for calls made by said subscriber terminals (TE) towards said fixed telephone network (RTF). The communications system supports the call control functions corresponding to the fixed telephone network (RTF) and the two-wire subscriber interface control functions of the subscriber terminals (TE).
    • 固定用户环路(CEB,EB,ATR)中的无线电接入通信系统为固定电话网络(RTF)的一组用户终端(TE)提供接入。 该通信系统除了用于信令之外还建立音频信道链路,作为语音频带中的信息通过与固定电话网络(RTF)有关的呼叫控制信号相关联的音调信号和产生的拨号信号 由用户终端(TE)用于由所述用户终端(TE)向所述固定电话网络(RTF)发出的呼叫。 通信系统支持与固定电话网(RTF)对应的呼叫控制功能和用户终端(TE)的两线用户接口控制功能。
    • 19. 发明申请
    • DATA MODULATION
    • 数据调制
    • WO2011078752A1
    • 2011-06-30
    • PCT/SE2009/051474
    • 2009-12-21
    • TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)HUI, DennisLOPEZ, Miguel
    • HUI, DennisLOPEZ, Miguel
    • H04L27/36
    • H04L27/36H04L1/0041H04L27/3405
    • A modulator (100) comprises a symbol mapper (110) mapping respective bit sets of a bit sequence corresponding to a burst and comprising data, training, tail and guard bits into respective symbols to form a symbol sequence of data, training, tail and guard symbols. A vector precoder (120) applies a vector precoding transformation to the data and training symbols to form precoded symbols. These precoded symbols are combined with the tail and guard symbols in a symbol processor (130) to from a sequence of transmit symbols. The vector precoding conducted by the modulator (100) of a transmitter (200) enables improved link performance without the cost of increased processing complexity of the receiver algorithm.
    • 调制器(100)包括符号映射器(110),其映射与突发相对应的比特序列的各个比特组,并且包括数据,训练,尾部和保护比特到各个符号中以形成数据,训练,尾部和后卫的符号序列 符号。 向量预编码器(120)向数据和训练符号应用向量预编码变换以形成预编码符号。 这些预编码符号与符号处理器(130)中的尾部和保护符号结合,以从发射符号序列。 由发射机(200)的调制器(100)进行的矢量预编码能够改善链路性能,而不会增加接收机算法的处理复杂度。