Method for communicating information in a communication system that supports multiple modulation schemes
    1.
    发明授权
    Method for communicating information in a communication system that supports multiple modulation schemes 失效
    用于在支持多种调制方案的通信系统中传送信息的方法

    公开(公告)号:US06456627B1

    公开(公告)日:2002-09-24

    申请号:US08921376

    申请日:1997-08-29

    IPC分类号: H04L512

    CPC分类号: H04B7/2628

    摘要: A method of communicating control information in systems that support multiple modulation schemes for communicating voice or data and control information. To provide backward compatibility dedicated control channels use the modulation scheme used in current systems, for example GMSK modulation scheme. Traffic channels and associated control channels use linear modulation schemes that have the same symbol rate. The modulation scheme of the associated control channel uses a reduced signal set of the modulation scheme used for traffic channels. Also, an in-band signalling procedure is used to indicate to a receiving station the modulation type, channel coding and speech coding used for a transmitted burst.

    摘要翻译: 一种在支持用于传达语音或数据和控制信息的多种调制方案的系统中传送控制信息的方法。 为了提供向后兼容性专用控制信道使用当前系统中使用的调制方案,例如GMSK调制方案。 业务信道和相关控制信道使用具有相同符号速率的线性调制方案。 相关控制信道的调制方案使用用于业务信道的调制方案的简化信号集合。 此外,使用带内信令过程向接收站指示用于发送突发的调制类型,信道编码和语音编码。

    Digital telecommunication system with selected combination of coding schemes and designated resources for packet transmission based on estimated transmission time
    2.
    发明授权
    Digital telecommunication system with selected combination of coding schemes and designated resources for packet transmission based on estimated transmission time 有权
    基于估计的传输时间,具有选择的编码方案组合和用于分组传输的指定资源的数字电信系统

    公开(公告)号:US06363425B1

    公开(公告)日:2002-03-26

    申请号:US09130599

    申请日:1998-08-07

    IPC分类号: G06F15173

    摘要: The present invention relates to a method and an arrangement for communicating packet information in a digital telecommunications system. Through the invention is selected a set of designated communication resources (ch1-chn) from an available amount of resources. Every packet (P) is forward error correction encoded into an encoded packet (Pci), via one of at least two different coding schemes (ci), prior to being transmitted to a receiving party, over the designated communication resources (ch1-chn). An estimated transmission time is calculated for all combinations of coding scheme (ci) and relevant distribution (dj) of the encoded data blocks (B1-B&Ggr;), in the encoded packet (Pci) over the set of designated communication resources (ch1-chn), and the combination (ci,dj) is selected, which minimises the estimated transmission time.

    摘要翻译: 本发明涉及用于在数字电信系统中传送分组信息的方法和装置。 通过本发明,从可用的资源量中选择一组指定的通信资源(ch1-chn)。 在通过指定的通信资源(ch1-chn)被发送到接收方之前,每个分组(P)经由编码分组(Pci)中的至少两个不同编码方案(ci)中的一个进行前向纠错编码, 。 对编码数据块(B1-B和Ggr)中的编码方案(ci)和相关分布(dj))的所有组合计算出在所指定的通信资源集合(ch1)上的编码分组(Pci)中的估计传输时间 chn),并且选择组合(ci,dj),这使估计的传输时间最小化。

    Signaling using phase rotation techniques in a digital communications system
    3.
    发明授权
    Signaling using phase rotation techniques in a digital communications system 有权
    在数字通信系统中使用相位旋转技术进行信号传输

    公开(公告)号:US06473506B1

    公开(公告)日:2002-10-29

    申请号:US09170127

    申请日:1998-10-13

    IPC分类号: H04L2710

    摘要: In a telecommunications system, such as a cellular radio telecommunications system, transmission information, such as modulation scheme selection information, coding information or power level control commands, is efficiently conveyed from the transmitter to the receiver without increasing the bandwidth requirements and without introducing additional transmission delays. This can be accomplished by employing a data symbol phase rotation technique, wherein a sequence of data symbols, for example, a sequence of training symbols used for estimating the propagation characteristics of a given channel, are phase-rotated in accordance with a phase rotation factor that uniquely corresponds to the information being conveyed to the receiver. At the receiver, the symbols are de-rotated until the receiver recovers the training sequence. This allows the receiver to determine the phase rotation factor used to rotate the symbols at the transmitter. This, in turn, identifies the corresponding transmission information.

    摘要翻译: 在诸如蜂窝无线电通信系统的电信系统中,诸如调制方案选择信息,编码信息或功率电平控制命令之类的传输信息在不增加带宽需求并且不引入附加传输的情况下被有效地从发射机传送到接收机 延误 这可以通过采用数据符号相位旋转技术来实现,其中,数据符号序列,例如用于估计给定信道的传播特性的训练符号序列,根据相位旋转因子进行相位旋转 其唯一地对应于正在传送到接收器的信息。 在接收机处,符号被去旋转直到接收机恢复训练序列。 这允许接收机确定用于在发射机处旋转符号的相位旋转因子。 这反过来又识别相应的传输信息。

    Method and arrangement for demodulating data symbols
    4.
    发明授权
    Method and arrangement for demodulating data symbols 有权
    用于解调数据符号的方法和装置

    公开(公告)号:US06269116B1

    公开(公告)日:2001-07-31

    申请号:US09156627

    申请日:1998-09-18

    IPC分类号: H03H730

    摘要: The present invention relates to a method and an arrangement for demodulating data symbols (d1-dN) having been transmitted through a communication channel, particularly a channel suffering from one or more impairments. Received signal samples ({overscore (&rgr;)}), representing the sent data symbols (d1-dN), are stored (310) and demodulated in both the forward (320) and the backward direction (330), via a demodulator/equaliser. In course of the demodulations are produced a first (SF) and a second (SB) respective set of soft values (skF; skB), which each is associated with a certain data symbol (dk). (340) From every pair of soft values (skF; skB) is then determined a joint soft value (SkJ), which e.g. may be utilised for deriving a resulting set of data symbols ({circumflex over (d)}1-{circumflex over (d)}N) or for directly decoding the payload information contained in the data symbols (d1-dN).

    摘要翻译: 本发明涉及一种用于解调已经通过通信信道发送的数据符号(d1-dN)的方法和装置,特别是具有一个或多个损伤的信道。 表示发送数据符号(d1-dN)的接收信号样本({overscore(rho)})经过解调器/均衡器被存储(310)并在前向(320)和反向(330)中进行解调 。 在解调过程中,产生一个第一(SF)和第二(SB)各自的软值集合(skF; skB),它们各自与某个数据符号(dk)相关联。 (340)然后,从每对软值(skF; skB)确定关节软值(SkJ) 可以用于导出所得到的数据符号集合({d(d)} 1- {circumflex over(d)} N)或用于直接解码包含在数据符号(d1-dN)中的有效载荷信息。