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1. 发明授权

US06337606B1 Digital communications modulator having a modulation processor which supports high data rates 失效
标题翻译：具有支持高数据速率的调制处理器的数字通信调制器
公开(公告)号：US06337606B1
公开(公告)日：2002-01-08
申请号：US09241697
申请日：1999-02-02
申请人： Eric Martin Brombaugh , John M. Liebetreu , Bruce A. Cochran , Ronald D. McCallister
发明人： Eric Martin Brombaugh , John M. Liebetreu , Bruce A. Cochran , Ronald D. McCallister
IPC分类号： H04L2720
CPC分类号： H04L25/03834 , H04L27/2071
摘要： An IC modulation processor (28) may be configured to operate in a single chip mode to accommodate baud rates up to a maximum clock rate for the processor (28) and in a dual chip mode to accommodate baud rates in excess of the maximum clock rate. The IC modulation processor (28) performs digital processing on a communication signal which conveys an input data stream (22). A pulse shaping filter (54-57) is provided following a phase mapper (50). The pulse shaping filter (54-57) is implemented as a pair of half-filters. Pulse shaping is distributed between two IC modulation processors (28) in the dual chip mode. An interpolator (86) and linearizer (106) follow the pulse shaping filters (54-57).
摘要翻译： IC调制处理器（28）可以被配置为以单芯片模式操作以适应处理器（28）的最大时钟速率的波特率，并且以双芯片模式适应超过最大时钟速率的波特率。 IC调制处理器（28）对传送输入数据流（22）的通信信号执行数字处理。在相位映射器（50）之后提供脉冲整形滤波器（54-57）。脉冲整形滤波器（54-57）被实现为一对半滤波器。在双芯片模式下，脉冲整形分布在两个IC调制处理器（28）之间。内插器（86）和线性化器（106）跟随脉冲整形滤波器（54-57）。

2. 发明授权

US06362701B1 Digital communications modulator having an interpolator upstream of a linearizer and method therefor 失效
标题翻译：具有线性化器上游的内插器的数字通信调制器及其方法
公开(公告)号：US06362701B1
公开(公告)日：2002-03-26
申请号：US09709885
申请日：2000-11-09
申请人： Eric Martin Brombaugh , John M. Liebetreu , Bruce A. Cochran , Ronald D. McCallister
发明人： Eric Martin Brombaugh , John M. Liebetreu , Bruce A. Cochran , Ronald D. McCallister
IPC分类号： H04L2720
CPC分类号： H04L25/03834 , H04L27/2071
摘要： An IC modulation processor (28) may be configured to operate in a single chip mode to accommodate baud rates up to a maximum clock rate for the processor (28) and in a dual chip mode to accommodate baud rates in excess of the maximum clock rate. The IC modulation processor (28) performs digital processing on a communication signal which conveys an input data stream (22). A pulse shaping filter (54-57) is provided following a phase mapper (50). The pulse shaping filter (54-57) is implemented as a pair of half-filters. Pulse shaping is distributed between two IC modulation processors (28) in the dual chip mode. An interpolator (86) and linearizer (106) follow the pulse shaping filters (54-57).
摘要翻译： IC调制处理器（28）可以被配置为以单芯片模式操作以适应处理器（28）的最大时钟速率的波特率，并且以双芯片模式适应超过最大时钟速率的波特率。 IC调制处理器（28）对传送输入数据流（22）的通信信号执行数字处理。在相位映射器（50）之后提供脉冲整形滤波器（54-57）。脉冲整形滤波器（54-57）被实现为一对半滤波器。在双芯片模式下，脉冲整形分布在两个IC调制处理器（28）之间。内插器（86）和线性化器（106）跟随脉冲整形滤波器（54-57）。

3. 发明授权

US06735734B1 Multipoint TDM data distribution system 失效
标题翻译：多点TDM数据分发系统
公开(公告)号：US06735734B1
公开(公告)日：2004-05-11
申请号：US09561222
申请日：2000-04-28
申请人： John M. Liebetreu , Eric Martin Brombaugh , Bruce A. Cochran , Ronald D. McCallister
发明人： John M. Liebetreu , Eric Martin Brombaugh , Bruce A. Cochran , Ronald D. McCallister
IPC分类号： H04J322
CPC分类号： H04L1/0059 , H04L1/0041 , H04L1/0045 , H04L1/0065 , H04L1/0071 , H04L1/0083 , H04L2001/0093 , H04L2001/0098
摘要： A TDM data distribution system (10) includes a hub unit (12) with a multipoint transmitter (24) and any number of subscriber units (14), each of which has a multipoint receiver (28). A forward communication link (16) transmitted by the hub unit (12) exhibits a substantially constant baud and carrier frequency over a number of diverse modulation format (MF) time slots (42). However, the different MF slots (42) convey data using different modulation formats. Modulation order and coding rate may vary for different modulation formats. The multipoint transmitter (24) includes a number of encoding FEC processors (48), wherein each encoding FEC processor (48) is active only for selected ones of the different MF slots (42). When inactive, the internal states of the encoding FEC processors (48) are frozen. Each multipoint receiver (28) includes a decoding FEC processor (108) which is active only for MF slots (42) assigned to the same modulation format for which the decoding FEC processors (108) are programmed. When inactive, the internal states of the decoding FEC processors (108) are frozen.
摘要翻译： TDM数据分发系统（10）包括具有多点发射机（24）和任意数目的用户单元（14）的集线器单元（12），每个用户单元（14）具有多点接收机（28）。由集线器单元（12）发送的前向通信链路（16）在多个不同调制格式（MF）时隙（42）上呈现基本恒定的波特率和载波频率。然而，不同的MF时隙（42）使用不同的调制格式传送数据。对于不同的调制格式，调制顺序和编码率可能会有所不同。多点发射机（24）包括多个编码FEC处理器（48），其中每个编码FEC处理器（48）仅对不同MF时隙（42）中的选定的一个处理器有效。当不活动时，编码FEC处理器（48）的内部状态被冻结。每个多点接收器（28）包括解码FEC处理器（108），其仅对分配给解码FEC处理器（108）编程的相同调制格式的MF时隙（42）有效。当不活动时，解码FEC处理器（108）的内部状态被冻结。

4. 发明授权

US5878085A Trellis coded modulation communications using pilot bits to resolve phase ambiguities 失效
标题翻译：网格编码调制通信使用导频比特来解决相位模糊
公开(公告)号：US5878085A
公开(公告)日：1999-03-02
申请号：US912155
申请日：1997-08-15
申请人： Ronald D. McCallister , Bruce A. Cochran , John M. Liebetreu
发明人： Ronald D. McCallister , Bruce A. Cochran , John M. Liebetreu
IPC分类号： H04L27/18
CPC分类号： H04L27/186
摘要： A communication system (10) includes a rotationally invariant pragmatic trellis coded modulation (PTCM) encoder (18) and decoder (34). The PTCM encoder (18) partitions information bits (20) into primary (42) and secondary (44) data streams. A pilot bit (56) is inserted into the secondary data stream (44) during each frame (46). The secondary stream (44) then receives rate 1/2 convolutional encoding (60) that is punctured to a rate of 9/16. The primary data stream (42) is differentially encoded (50). The encoded primary and secondary streams are concurrently phase mapped (70) using an 8-PSK constellation so that an effective code rate of 5/6 results. The PTCM decoder (34) convolutionally decodes (84) the secondary stream, then re-encodes secondary stream estimates using a systematic, transparent convolutional encoder (88). The pilot bit is evaluated (92) in the re-encoded symbol estimates (90) to detect and correct any secondary stream inversion that may have occurred due to phase ambiguity. After this correction, the secondary modulation is removed (98) from phase value estimates, and the primary stream is decoded.
摘要翻译：通信系统（10）包括旋转不变的实用网格编码调制（PTCM）编码器（18）和解码器（34）。 PTCM编码器（18）将信息位（20）分割成主（42）和次（44）数据流。在每个帧（46）期间，将导频位（56）插入到次要数据流（44）中。次级流（44）然后接收速率+ E，fra 1/2 + EE卷积编码（60），其被打孔到+ E，fra 9/16 + EE的速率。主数据流（42）被差分编码（50）。使用8-PSK星座同时对编码的主流和次流进行相位映射（70），从而得到+ E，fra 5/6 + EE的有效码率。 PTCM解码器（34）对二次流进行卷积解码（84），然后使用系统的透明卷积编码器（88）对二次流估计进行重新编码。在重新编码的符号估计（90）中对导频位进行评估（92）以检测和校正由于相位模糊而可能发生的任何二次流反转。在该校正之后，从相位值估计中去除二次调制（98），并且对主流进行解码。

5. 发明授权

US6097764A Pragmatic trellis-coded modulation system and method therefor 失效
标题翻译：实用网格编码调制系统及其方法
公开(公告)号：US6097764A
公开(公告)日：2000-08-01
申请号：US48612
申请日：1998-03-26
申请人： Ronald D. McCallister , Bruce A. Cochran , John M. Liebetreu
发明人： Ronald D. McCallister , Bruce A. Cochran , John M. Liebetreu
IPC分类号： H03M13/25 , H03M13/29 , H03M13/41 , H04L1/00 , H04L27/00 , H04L27/34 , H04L27/38 , H03M13/12
CPC分类号： H04L1/006 , H03M13/253 , H03M13/256 , H03M13/2936 , H03M13/3776 , H03M13/3961 , H03M13/41 , H03M13/6325 , H03M13/6362 , H03M13/6508 , H04L1/0054 , H04L1/0065 , H04L1/0068 , H04L27/3416 , H04L27/3827 , H04L2027/003 , H04L2027/0055
摘要： A digital communication system (20) communicates using a polar amplitude phase shift keyed (P-APSK) phase point constellation (70, 70', 70"). Pragmatic encoding is accommodated using the constellation (70, 70', 70") to simultaneously communicate both encoded and uncoded information bits (69, 51). The constellation (70, 70', 70") has an even number of phase point rings (74) and equal numbers of phase points (72) in ring pairs (75, 76, 77). Encoded information bits (69) specify secondary modulation and uncoded information bits (51) specify primary modulation. The constellation (70, 70', 70") is configured so secondary sub-constellations (78) include four phase points (72) arranged so that two of the four phase points (72) exhibit two phase angles at one magnitude and the other two of the four phase points (72) exhibit phase angles that are at another magnitude. The difference between the phase angles at different magnitudes within a secondary sub-constellation (78) is constant.
摘要翻译：数字通信系统（20）使用极振幅相移键控（P-APSK）相位点星座（70,70'，70“）进行通信。使用星座（70,70'，70“）来容纳语音编码以同时传送编码和未编码的信息比特（69,51）。星座（70,70'，70“）具有环形对（75,76,77）中的偶数个相位点环（74）和相等数量的相位点（72）。编码信息位（69）指定二次调制和未编码信息位（51）指定一次调制。星座（70,70'，70“）被配置为使得次星座（78）包括四个相位点（72），四个相位点（72）布置成使四个相位点（72）中的两个呈现一个幅度的两个相位角，四个相位点（72）中的其他两个表现出处于另一个幅度的相位角。次级星座（78）内不同幅度的相位角之间的差异是恒定的。

6. 发明授权

US6078625A Pragmatic decoder and method therefor 失效
标题翻译：语用解码器及其方法
公开(公告)号：US6078625A
公开(公告)日：2000-06-20
申请号：US954762
申请日：1997-10-20
申请人： Ronald D. McCallister , Bruce A. Cochran , John M. Liebetreu
发明人： Ronald D. McCallister , Bruce A. Cochran , John M. Liebetreu
IPC分类号： H04L1/00 , H04L27/18 , H03D1/00
CPC分类号： H04L1/0065 , H04L1/0047 , H04L1/006 , H04L27/186 , H04L1/0054 , H04L1/0057
摘要： A communication system (11) uses concatenated coding in which an inner code is configured to match the needs of an outer code. The inner code is implemented through a pragmatic trellis coded modulation encoder (18) and decoder (34). A parser (50) of the encoder (18) distributes fewer than one user information bit per unit interval (66) to a convolutional encoder (58) which generates at least two convolutionally encoded bits for each user information bit it processes. Exactly one of the convolutionally encoded bits is phase mapped (56) with at least two user information bits during each unit interval (66). The decoder (34) detects a frame sync pattern (48) inserted into the user information bits to resolve phase ambiguities. Phase estimates are convolutionally decoded (100) to provide decoded data estimates that are then used to selectively rotate the phase estimates prior to routing the phase estimates to a slice detector (118).
摘要翻译：通信系统（11）使用连接编码，其中内部码被配置为匹配外部码的需要。内部代码通过实用的网格编码调制编码器（18）和解码器（34）来实现。编码器（18）的解析器（50）将每单位间隔（66）的不到一个用户信息比特分配到卷积编码器（58），该卷积编码器（58）为其处理的每个用户信息比特生成至少两个卷积编码比特。在每个单位间隔（66）期间，具有至少两个用户信息比特的卷积编码比特中的一个完全相位映射（56）。解码器（34）检测插入到用户信息位中的帧同步模式（48）以解决相位模糊。相位估计被卷积解码（100）以提供解码的数据估计，然后在将相位估计路由到切片检测器（118）之前，将其用于选择性地旋转相位估计。

7. 发明授权

US6005897A Data communication system and method therefor 失效
标题翻译：数据通信系统及其方法
公开(公告)号：US6005897A
公开(公告)日：1999-12-21
申请号：US991385
申请日：1997-12-16
申请人： Ronald D. McCallister , Bruce A. Cochran , John M. Liebetreu
发明人： Ronald D. McCallister , Bruce A. Cochran , John M. Liebetreu
IPC分类号： H03M13/25 , H03M13/29 , H03M13/41 , H04L1/00 , H04L27/00 , H04L27/34 , H04L27/38
CPC分类号： H04L1/006 , H03M13/253 , H03M13/256 , H03M13/2936 , H03M13/3776 , H03M13/3961 , H03M13/41 , H03M13/6325 , H03M13/6362 , H03M13/6508 , H04L1/0054 , H04L1/0065 , H04L1/0068 , H04L27/3416 , H04L27/3827 , H04L2027/003 , H04L2027/0055
摘要： A digital communication system (20) communicates using a polar amplitude phase shift keyed (P-APSK) phase point constellation (70, 70'). Pragmatic encoding and puncturing is accommodated. The pragmatic encoding uses the P-APSK constellation (70, 70') to simultaneously communicate both encoded and uncoded information bits. The P-APSK constellation (70, 70') has an even number of phase point rings (74, 76) and equal numbers of phase points (72) in pairs of the rings (74, 76). Encoded bits specify secondary modulation and uncoded bits specify primary modulation. The constellation (70, 70') is configured so that secondary modulation sub-constellations (78) include four phase points (72) arranged so that two of the four phase points (72) exhibit two phase angles at one magnitude and the other two of the four phase points exhibit phase angles that are at another magnitude. The difference between the phase angles at different magnitudes within a secondary sub-constellation (78) is constant.
摘要翻译：数字通信系统（20）使用极振幅相移键控（P-APSK）相位点星座（70,70'）进行通信。适应实用的编码和穿刺。实际编码使用P-APSK星座（70,70'）来同时传送编码和未编码的信息比特。 P-APSK星座（70,70'）在成对的环（74,76）中具有偶数个相位点环（74,76）和相等数量的相位点（72）。编码位指定二次调制，未编码位指定一次调制。星座（70,70'）被配置为使得二次调制子星座（78）包括四个相位点（72），四个相位点（72）布置成使得四个相位点（72）中的两个在一个幅度上呈现两个相位角，另外两个相位点四个相位点的相位角呈现出另一个幅度。次级星座（78）内不同幅度的相位角之间的差异是恒定的。

8. 发明授权

US5995551A Rotationally invariant pragmatic trellis coded digital communication system and method therefor 失效
标题翻译：旋转不变实用网格编码数字通信系统及其方法
公开(公告)号：US5995551A
公开(公告)日：1999-11-30
申请号：US912225
申请日：1997-08-15
申请人： Ronald D. McCallister , Bruce A. Cochran , John M. Liebetreu
发明人： Ronald D. McCallister , Bruce A. Cochran , John M. Liebetreu
IPC分类号： H04L27/18 , H04L5/12 , H04L23/02
CPC分类号： H04L27/186
摘要： A communication system (10) includes a rotationally invariant pragmatic trellis coded modulator (18) and demodulator (34). The modulator (18) partitions information bits (20) into primary (42) and secondary (44) data streams. The secondary data stream (44) is convolutionally encoded (70) then fed to the LSB of a phase mapper (76). The phase mapper (76) is arranged so that all pairs of adjacent phase data are generated from pairs of opposing polarity LSB inputs. The primary data stream (42) is differentially encoded through a dual channel differential encoder (50). The demodulator (34) convolutionally decodes (90) the secondary stream, then re-encodes (96) secondary stream estimates. The re-encoded secondary stream estimates are used to remove (102) the secondary modulation from phase value estimates. Adjusted phase value estimates are phase demodulated (104) and differentially decoded using a dual channel differential decoder (106).
摘要翻译：通信系统（10）包括旋转不变的实际网格编码调制器（18）和解调器（34）。调制器（18）将信息比特（20）分割成主（42）和次（44）数据流。副数据流（44）被卷积编码（70），然后馈送到相位映射器（76）的LSB。相位映射器（76）被布置成使得所有相邻的相位数据对都是由成对的极性LSB输入产生的。主数据流（42）通过双通道差分编码器（50）进行差分编码。解调器（34）对二次流进行卷积解码（90），然后重新编码（96）二次流估计。重新编码的二次流估计用于从相位值估计中去除（102）二次调制。调整后的相位值估计被相位解调（104），并使用双通道差分解码器（106）进行差分解码。

9. 发明授权

US5553098A Demodulator with selectable coherent and differential data 失效
标题翻译：具有可选择的相干和差分数据检测的解调器。
公开(公告)号：US5553098A
公开(公告)日：1996-09-03
申请号：US226669
申请日：1994-04-12
申请人： Bruce A. Cochran , John M. Liebetreu , Ronald D. McCallister
发明人： Bruce A. Cochran , John M. Liebetreu , Ronald D. McCallister
IPC分类号： H04L27/00 , H04L27/233 , H04L27/14
CPC分类号： H04L27/2332 , H04L2027/003 , H04L2027/0055
摘要： A selectable demodulator (32) operates in the phase domain to implement a coherent demodulation path (40) and a differentially coherent demodulation path (42). The coherent path (40) includes a differential encoder circuit (46) to produce coherently demodulated differential data. Magnitude converters (62, 62') convert phase errors in each path into magnitude values. A comparison circuit (66) compares magnitude values from the two paths (40, 42) and selects the path encountering the least phase error. A selection circuit (60) provides data codes demodulated in accordance with the selection.
摘要翻译：可选择的解调器（32）在相位域中操作以实现相干解调路径（40）和差分相干解调路径（42）。相干路径（40）包括用于产生相干解调的差分数据的差分编码器电路（46）。幅度转换器（62,62'）将每个路径中的相位误差转换为幅度值。比较电路（66）比较来自两个路径（40,42）的幅度值，并选择遇到最小相位误差的路径。选择电路（60）提供根据选择解调的数据代码。

10. 发明授权

US6128282A Network node controller and method for combining circuit and packet data 失效
标题翻译：网络节点控制器和组合电路和数据包数据的方法
公开(公告)号：US6128282A
公开(公告)日：2000-10-03
申请号：US994002
申请日：1997-12-18
申请人： John M. Liebetreu , Ronald D. McCallister
发明人： John M. Liebetreu , Ronald D. McCallister
IPC分类号： H04L12/56 , H04Q11/04 , H04J3/24 , H04J3/00 , H04L12/66
CPC分类号： H04Q11/0478 , H04L2012/5612
摘要： A node controller (30) within a data communication network (22) provides network access for a digital data stream (32). A processor (42) partitions the digital data stream (32) into a constant data rate component (44) having a predictable data rate and a data packet component (46) having an unpredictable data rate. The constant data rate component (44) is then transferred over a first portion (74) of a network data stream (26) reserved for a circuit transmission protocol, and the data packet component (46) is packetized and transferred over a second portion (76) of the network data stream (26) reserved for a packet transmission protocol.
摘要翻译：数据通信网络（22）内的节点控制器（30）为数字数据流（32）提供网络接入。处理器（42）将数字数据流（32）分割成具有可预测数据速率的恒定数据速率分量（44）和具有不可预测数据速率的数据分组分量（46）。恒定数据速率分量（44）然后通过为电路传输协议保留的网络数据流（26）的第一部分（74）传送，并且数据分组组件（46）被分组化并在第二部分 76）被保留用于分组传输协议的网络数据流（26）。

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