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    Amino acid derivatives for peptide synthesis
    1.
    发明授权
    Amino acid derivatives for peptide synthesis 失效
    用于肽合成的氨基酸衍生物

    公开(公告)号：US5455363A

    公开(公告)日：1995-10-03

    申请号：US957677

    申请日：1992-10-07

    申请人： Jacques Gosteli ,  Beat Sax ,  Fritz Dick ,  Rudolf Tanner

    发明人： Jacques Gosteli ,  Beat Sax ,  Fritz Dick ,  Rudolf Tanner

    IPC分类号： C07C237/06 ,  C07C271/22 ,  C07K1/06 ,  C07K7/04

    CPC分类号： C07C237/06 ,  C07C271/22 ,  C07K1/066 ,  C07C2103/18 ,  Y02P20/55

    摘要： Compounds of formula I are described, ##STR1## wherein n is equal to one or two, R.sub.1 stands for hydrogen or an amino protecting group, R.sub.2 represents hydrogen or a carboxyl protecting group and R.sub.3 4-methyltriphenylmethyl, 4,4'-dimethyltriphenylmethyl, 4,4',4"-trimethyltriphenylmethyl. Furthermore described are compounds of formula I which are reactive and suitable for coupling reactions and are derived from I with R.sub.2 =H by activation of the carboxyl group.The compounds mentioned above can be used as starting materials for the synthesis of peptides. They are more suitable than analogous compounds of formula I, wherein R.sub.3 represents hydrogen or a carbamoyl protecting group used hitherto.

    摘要翻译： 描述式I化合物，其中n等于1或2，R1代表氢或氨基保护基，R2代表氢或羧基保护基，R3,4-甲基三苯基甲基，4,4'-二甲基三苯基甲基 ，4,4'，4“ - 三甲基三苯基甲基。 此外还描述了反应性和适用于偶联反应的式I化合物，并且通过活化羧基得到R 2 = H的I化合物。 上述化合物可以用作合成肽的起始原料。 它们比类似式I化合物更合适，其中R 3表示氢或迄今使用的氨基甲酰基保护基。

    Space-time coding and channel estimation scheme, arrangement and method
    2.
    发明授权
    Space-time coding and channel estimation scheme, arrangement and method 有权
    空时编码和信道估计方案，布置和方法

    公开(公告)号：US06891897B1

    公开(公告)日：2005-05-10

    申请号：US09698797

    申请日：2000-10-27

    申请人： Damian Bevan ,  Rudolf Tanner ,  Alex Grant

    发明人： Damian Bevan ,  Rudolf Tanner ,  Alex Grant

    IPC分类号： H04B1/707 ,  H04B7/06 ,  H04L1/00 ,  H04L1/06 ,  H04L25/02 ,  H04L25/03 ,  H04L5/12 ,  H04B1/66 ,  H04L1/02

    CPC分类号： H04L1/0625 ,  H04B1/7105 ,  H04B7/0669 ,  H04L1/005 ,  H04L1/065 ,  H04L25/0204 ,  H04L25/0236 ,  H04L25/03292 ,  H04L25/03318

    摘要： The evolution of high rate data services within future wireless networks will call for new RF access technologies to enable substantial increases in overall system spectral efficiency at an acceptably low cost to the user. Space-Time Coding (STC) is an antenna array processing technology currently simulating considerable Interest across the wireless industry. The invention provides a space-time coding apparatus having an input, a trellis encoder, a modulator, a demultiplexer, and a set of signal outputs wherein the input is operable to receive a stream of data. This allows de-multiplexing to take place after coding and modulation has been performed. The trellis encoder comprises a convolutional encoder operable to sequentially group data to provide coded bits to provide QPSK symbols. By the selection of convolutional encoder rates and/or modulation alphabets STCs of any desired dimensionality may be produced including multi-dimensional codes.

    摘要翻译： 未来无线网络中高速率数据业务的演进将需要新的射频接入技术，以便以可接受的低成本向用户大幅提升整个系统频谱效率。 时空编码（STC）是一种天线阵列处理技术，目前正在模拟无线行业的相当大的兴趣。 本发明提供一种具有输入，网格编码器，调制器，解复用器和一组信号输出的时空编码装置，其中输入可操作以接收数据流。 这允许在进行编码和调制之后进行解复用。 网格编码器包括卷积编码器，其可操作以顺序地分组数据以提供编码比特以提供QPSK符号。 通过选择卷积编码器速率和/或调制字母可以产生任何期望维度的STC，包括多维码。