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    Trellis precoding for modulation systems
    1.
    发明授权
    Trellis precoding for modulation systems 失效
    网格预编码调制系统

    公开(公告)号：US5159610A

    公开(公告)日：1992-10-27

    申请号：US823586

    申请日：1992-01-16

    申请人： Vedat M. Eyuboglu ,  G. David Forney, Jr.

    发明人： Vedat M. Eyuboglu ,  G. David Forney, Jr.

    IPC分类号： H04L25/03 ,  H04L27/34

    CPC分类号： H04L27/3422 ,  H04L25/03044 ,  H04L25/03343 ,  H04L2025/03656 ,  H04L2025/03662 ,  H04L2025/03808

    摘要： In general the invention features mapping a digital data sequence into a signal point sequence for data transmission over a channel characterized by a non-ideal response, by selecting the signal point sequence from a subset of all possible signal point sequences based on the digital data sequence and upon the response, all possible signal point sequences in the subset lying in a fundamental region of a filtered trellis code, the fundamental region being other than a simple Cartesian product of finite-dimensional regions.

    摘要翻译： 通常，本发明的特征在于，通过基于数字数据序列从所有可能的信号点序列的子集中选择信号点序列，将数字数据序列映射到用于通过非理想响应表征的信道上的数据传输的信号点序列 并且在响应时，子集中的所有可能的信号点序列位于滤波格子码的基本区域中，该基本区域不同于有限维度区域的简单笛卡尔乘积。

    Lattice and trellis-coded quantization
    2.
    发明授权
    Lattice and trellis-coded quantization 失效
    格子和网格编码量化

    公开(公告)号：US5297170A

    公开(公告)日：1994-03-22

    申请号：US570413

    申请日：1990-08-21

    申请人： Vedat M. Eyuboglu ,  G. David Forney, Jr.

    发明人： Vedat M. Eyuboglu ,  G. David Forney, Jr.

    IPC分类号： G06T9/00 ,  H03M7/30 ,  H04B14/04

    CPC分类号： G06T9/008 ,  H03M7/3082

    摘要： Vectors are quantized by representing the vectors by quantized values using a codebook having granular regions which are based on a coset code, and which lie inside a boundary region which is based on another coset code, the boundary region being other than an N-cube and other than the Voronoi region of a sublattice .LAMBDA..sub.b =M.LAMBDA..sub.g of a lattic .LAMBDA..sub.g upon which the granular regions may have been based.

    摘要翻译： 通过使用具有基于陪集码的粒状区域的码本，通过量化值表示矢量来量化矢量，并且位于基于另一陪集码的边界区域内，该边界区域不同于N-立方体， 除了格子区域可能已经基于的格子（λ）g的子格子（Lambda）b = M（λ）g的Voronoi区域之外。

    Trellis shaping for modulation systems
    3.
    发明授权
    Trellis shaping for modulation systems 失效
    调制系统的网格整形

    公开(公告)号：US5150381A

    公开(公告)日：1992-09-22

    申请号：US421610

    申请日：1989-10-13

    申请人： G. David Forney, Jr. ,  Vedat M. Eyuboglu

    发明人： G. David Forney, Jr. ,  Vedat M. Eyuboglu

    IPC分类号： H04L27/34

    CPC分类号： H04L27/3411 ,  H04L27/3422 ,  H04L1/0042

    摘要： A digital data sequence is mapped into a signal point sequence for transmission, by selecting the signal point sequence from a subset of all possible signal point sequences based on the digital data sequence, all possible signal point sequences in the subset lying in a fundamental region of a trellis code, the fundamental region being other than a simple Cartesian product of finite-dimensional regions. In another aspect, a digital data sequence is mapped into a sequence of signal points for transmission, by specifying a class of possible sequences based on the digital data, and selecting the signal point sequence from the class, the selection being based on the respective average powers of the possible sequences of the class, the selection being based on not only a fixed-length block of the digital data.

    摘要翻译： 通过从基于数字数据序列的所有可能的信号点序列的子集中选择信号点序列，数字数据序列被映射到用于传输的信号点序列中，子集中的所有可能的信号点序列位于 网格码，基本区域不同于有限维区域的简单笛卡尔乘积。 在另一方面，通过基于数字数据指定一类可能的序列，并从该类中选择信号点序列，将数字数据序列映射到用于传输的信号点序列中，该选择基于相应的平均值 该类的可能序列的功率，该选择不仅基于数字数据的固定长度块。

    Signal constellations
    5.
    发明授权
    Signal constellations 失效
    信号星座

    公开(公告)号：US4959842A

    公开(公告)日：1990-09-25

    申请号：US181203

    申请日：1988-04-13

    申请人： G. David Forney, Jr.

    发明人： G. David Forney, Jr.

    IPC分类号： H04L27/34

    CPC分类号： H04L27/3477 ,  H04L27/3427

    摘要： A Voronoi signal constellation with ties includes those points of a lattice .LAMBDA. (or a coset .LAMBDA.+c) that lie within a Voronoi region of a sublattice .LAMBDA.' of .LAMBDA., .LAMBDA.' being other then a scaled version of .LAMBDA., and the constellation includes more than .vertline..LAMBDA./.LAMBDA.'.vertline. points, where .vertline..LAMBDA./.LAMBDA.'.vertline. is the order of the lattice partition .LAMBDA./.LAMBDA.'. In order aspects, the lattices .LAMBDA. and .LAMBDA.' are of dimension greater than two; the sublattice .LAMBDA.' is a version of a binary lattice of depth at least two and normalized informativity less than one; a method is provided of mapping from m data bits to a point drawn from a Voronoi constellation of more than 2.sup.m points, based on an N-dimensional lattice partition .LAMBDA./.LAMBDA.'; and Voronoi constellations are provided comprising points of a lattice .LAMBDA. (or a coset .LAMBDA.+c) that lie within a Voronoi region of a sublattice .LAMBDA.' of .LAMBDA., the sublattice .LAMBDA.' comprising a binary lattice of depth two and normalized informativity less than one. Such sublattices .LAMBDA.' are also useful in lattice quantizers.

    摘要翻译： 具有连带的Voronoi信号星座包括位于LAMBDA的亚格子LAMBDA的Voronoi区域内的格子LAMBDA（或陪集LAMBDA + c）的点，LAMBDA'是LAMBDA的缩放版本，而星座包括 超过| LAMBDA / LAMBDA'|点，其中| LAMBDA / LAMBDA'|是格子分区LAMBDA / LAMBDA'的顺序。 在顺序方面，晶格LAMBDA和LAMBDA'的尺寸大于2; 子格子LAMBDA'是深度至少为二的二进制格子的版本，标准化信息小于1; 提供了一种基于N维格子分区LAMBDA / LAMBDA'从m个数据位映射到从多于2m点的Voronoi星座绘制的点的方法; 并且提供Voronoi星座，其包括位于LAMBDA的子晶格LAMBDA的Voronoi区域内的晶格LAMBDA（或陪集LAMBDA + c）的点，子晶格LAMBDA包括深度为2的二进制晶格和小于1的归一化信息 。 这种子晶格LAMBDA'也可用于晶格量化器。