专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US08358723B1 Self-configurable radio receiver system and method for use with signals without prior knowledge of signal defining characteristics 有权
标题翻译：可配置无线电接收机系统和方法，用于没有信号定义特性的先前知识的信号
公开(公告)号：US08358723B1
公开(公告)日：2013-01-22
申请号：US11602440
申请日：2006-11-10
申请人： Jon Hamkins , Marvin K. Simon , Dariush Divsalar , Samuel J. Dolinar , Andre Tkacenko
发明人： Jon Hamkins , Marvin K. Simon , Dariush Divsalar , Samuel J. Dolinar , Andre Tkacenko
IPC分类号： H04L27/38
CPC分类号： H04L27/0012 , H04L25/4904 , H04L27/2273 , H04L2027/0046 , H04L2027/0055 , H04L2027/0065
摘要： A method, radio receiver, and system to autonomously receive and decode a plurality of signals having a variety of signal types without a priori knowledge of the defining characteristics of the signals is disclosed. The radio receiver is capable of receiving a signal of an unknown signal type and, by estimating one or more defining characteristics of the signal, determine the type of signal. The estimated defining characteristic(s) is/are utilized to enable the receiver to determine other defining characteristics. This in turn, enables the receiver, through multiple iterations, to make a maximum-likelihood (ML) estimate for each of the defining characteristics. After the type of signal is determined by its defining characteristics, the receiver selects an appropriate decoder from a plurality of decoders to decode the signal.
摘要翻译：公开了一种方法，无线电接收机和系统，以自主地接收和解码具有各种信号类型的多个信号，而没有信号的定义特性的先验知识。无线电接收机能够接收未知信号类型的信号，并且通过估计信号的一个或多个定义特性来确定信号的类型。估计的定义特征被用于使得接收机能够确定其它定义特征。这反过来又使得接收机通过多次迭代对每个定义特征做出最大似然（ML）估计。在通过其定义特性确定信号的类型之后，接收机从多个解码器中选择适当的解码器来对信号进行解码。

2. 发明授权

US07333571B2 Reduced complexity coding system using iterative decoding 有权
标题翻译：降低了使用迭代解码的复杂度编码系统
公开(公告)号：US07333571B2
公开(公告)日：2008-02-19
申请号：US10131611
申请日：2002-04-23
申请人： Marvin K. Simon , Dariush Divsalar
发明人： Marvin K. Simon , Dariush Divsalar
IPC分类号： H04L27/22 , H04L27/06 , H04L27/20
CPC分类号： H04L1/006 , H04L1/005 , H04L1/0065 , H04L27/186
摘要： A concatenated coding scheme, using an outer coder, interleaver, and the inner coder inherent in an FQPSK signal to form a coded FQPSK signal. The inner coder is modified to enable interactive decoding of the outer code.
摘要翻译：使用FQPSK信号固有的外部编码器，交织器和内部编码器的级联编码方案来形成编码的FQPSK信号。内部编码器被修改为能够对外部代码进行交互式解码。

3. 发明授权

US5644592A Parallel interference cancellation for CDMA applications 失效
标题翻译： CDMA应用的并行干扰消除
公开(公告)号：US5644592A
公开(公告)日：1997-07-01
申请号：US428306
申请日：1995-04-24
申请人： Dariush Divsalar , Marvin K. Simon , Dan Raphaeli
发明人： Dariush Divsalar , Marvin K. Simon , Dan Raphaeli
IPC分类号： H04B1/7107 , H04B1/707 , H04J13/04
CPC分类号： H04B1/71075 , H04B2001/71077
摘要： The present invention provides a method of decoding a spread spectrum composite signal, the composite signal comprising plural user signals that have been spread with plural respective codes, wherein each coded signal is despread, averaged to produce a signal value, analyzed to produce a tentative decision, respread, summed with other respread signals to produce combined interference signals, the method comprising scaling the combined interference signals with a weighting factor to produce a scaled combined interference signal, scaling the composite signal with the weighting factor to produce a scaled composite signal, scaling the signal value by the complement of the weighting factor to produce a leakage signal, combining the scaled composite signal, the scaled combined interference signal and the leakage signal to produce an estimate of a respective user signal.
摘要翻译：本发明提供一种对扩展频谱复合信号进行解码的方法，该复合信号包括已经被多个相应码扩展的多个用户信号，其中每个编码信号被去扩展，被平均以产生一个信号值，以产生暂定的决定，再与其他再生信号相加以产生组合的干扰信号，所述方法包括以加权因子缩放组合干扰信号以产生缩放的组合干扰信号，以加权因子缩放复合信号以产生缩放复合信号，缩放通过加权因子的补码产生信号值以产生泄漏信号，组合缩放的复合信号，缩放的组合干扰信号和泄漏信号以产生相应用户信号的估计。

4. 发明授权

US5017883A Multiple symbol differential detection 失效
标题翻译：多符号差分检测
公开(公告)号：US5017883A
公开(公告)日：1991-05-21
申请号：US560691
申请日：1990-07-31
申请人： Dariush Divsalar , Marvin K. Simon
发明人： Dariush Divsalar , Marvin K. Simon
IPC分类号： H04L27/233
CPC分类号： H04L27/2331
摘要： A differential detection technique for MPSL signals is provided which uses a multiple symbol observation interval on the basis of which a joint decision is made regarding the phase of the received symbols. In accordance with the invention, a first difference phase is created between first and second received symbols. Next the first difference phase is correlated with the possible values thereof to provide a first plurality of intermediate output signals. A second difference phase is next created between second and third received symbols. The second difference phase is correlated with plural possible values thereof to provide a second plurality of intermediate output signals. Next, a third difference phase is created between the first and third symbols. The third difference phase is correlated with plural possible values thereof to provide a third plurality of intermediate output signals. Each of the first plurality of intermediate outputs are combined with each of the second plurality of intermediate outputs and each of the third plurality of intermediate outputs to provide a plurality of possible output values. Finally, a joint decision is made by choosing from the plurality of possible output values the value which represents the best combined correlation of the first, second and third difference values with the possible values thereof.
摘要翻译：提供了一种用于MPSL信号的差分检测技术，其使用多符号观察间隔，基于该符号观察间隔对接收符号的相位进行联合判定。根据本发明，在第一和第二接收符号之间产生第一差分相位。接下来，第一差分相位与其可能的值相关以提供第一多个中间输出信号。接下来在第二和第三接收符号之间创建第二差分相位。第二差分相位与其多个可能值相关，以提供第二多个中间输出信号。接下来，在第一和第三符号之间产生第三差分相位。第三差分相位与多个可能值相关，以提供第三多个中间输出信号。第一多个中间输出中的每一个与第二多个中间输出和第三多个中间输出中的每一个组合以提供多个可能的输出值。最后，通过从多个可能的输出值中选择代表第一，第二和第三差分值与其可能值的最佳组合相关性的值来进行联合决定。

5. 发明授权

US5007068A Doppler-corrected differential detection system 失效
标题翻译：多普勒校正差分检测系统
公开(公告)号：US5007068A
公开(公告)日：1991-04-09
申请号：US203374
申请日：1988-06-07
申请人： Marvin K. Simon , Dariush Divsalar
发明人： Marvin K. Simon , Dariush Divsalar
IPC分类号： G01S13/78 , H04L27/01 , H04L27/233
CPC分类号： G01S13/784 , H04L27/01 , H04L27/2331
摘要： Doppler in a communication system operating with a multiple differential phase-shift-keyed format ("MDPSK") creates an adverse phase shift in an incoming signal. An open loop frequency estimation is derived from a Doppler-contaminated incoming signal. Based upon the recognition that, whereas the change in phase of the received signal over a full symbol contains both the differentially encoded data and the Doppler induced phase shift, the same change in phase over half a symbol (within a given symbol interval) contains only the doppler induced phase shift, and the Doppler effect can be estimated and removed from the incoming signal. Doppler correction occurs prior to the receiver's final output of decoded data. A multiphase system can operate with two samplings per symbol interval at no penalty in signal-to-noise ratio provided that an ideal low pass pre-detection filter is employed, and two samples, at 1/4 and 3/4 of the symbol interval T.sub.s, are taken and summed together prior to incoming signal data detection.
摘要翻译：以多差分相移键控格式（“MDPSK”）操作的通信系统中的多普勒在输入信号中产生不利的相移。开环频率估计是从多普勒污染的输入信号导出的。基于认识到，尽管接收到的信号在完整符号上的相位变化包含差分编码数据和多普勒感应相移，但相同于半符号（在给定符号间隔内）的相位变化仅包含多普勒引发相移，并且可以从输入信号估计和去除多普勒效应。多普勒校正发生在接收机的最终输出解码数据之前。如果采用理想的低通预检测滤波器，则多符号系统可以以每个符号间隔进行两次采样而不会在信噪比方面进行操作，并且在符号间隔的1/4和3/4处有两个采样 Ts在进入的信号数据检测之前被采集并相加在一起。

6. 发明授权

US4922507A Multiple trellis coded modulation 失效
标题翻译：多重网格编码调制
公开(公告)号：US4922507A
公开(公告)日：1990-05-01
申请号：US127117
申请日：1987-12-01
申请人： Marvin K. Simon , Dariush Divsalar
发明人： Marvin K. Simon , Dariush Divsalar
IPC分类号： H04L27/18
CPC分类号： H04L27/186
摘要： A technique for designing trellis codes to minimize bit error performance for a fading channel. The invention provides a criteria which may be used in the design of such codes which is significantly different from that used for average white Gaussian noise channels. The method of multiple trellis coded modulation of the present invention comprises the steps of: (a) coding b bits of input data into s intermediate outputs; (b) grouping said s intermediate outputs into k groups of s.sub.i intermediate outputs each where the summation of all s.sub.i,s is equal to s and k is equal to at least 2; (c) mapping each of said k groups of intermediate outputs into one of a plurality of symbols in accordance with a plurality of modulation schemes, one for each group such that the first group is mapped in accordance with a first modulation scheme and the second group is mapped in accordance with a second modulation scheme; and (d) outputting each of said symbols to provide k output symbols for each b bits of input data.
摘要翻译：一种用于设计网格码以最小化衰落信道的误码性能的技术。本发明提供了可用于设计与用于平均白高斯噪声信道所使用的代码显着不同的这种代码的标准。本发明的多网格编码调制方法包括以下步骤：（a）将b比特的输入数据编码成s个中间输出; （b）将所述s个中间输出分组为k组si个中间输出，其中所有si，s的求和等于s且k等于至少2; （c）根据多个调制方案将所述k组中间输出中的每一个映射到多个符号中的一个，每个组一个，使得根据第一调制方案映射第一组，并且第二组根据第二调制方案映射; 和（d）输出每个所述符号以为输入数据的每个b位提供k个输出符号。

7. 发明授权

US5023889A Trellis coded multilevel DPSK system with doppler correction for mobile satellite channels 失效
标题翻译：网格编码多层DPSK系统，用于移动卫星信道的多普勒校正
公开(公告)号：US5023889A
公开(公告)日：1991-06-11
申请号：US200742
申请日：1988-05-31
申请人： Dariush Divsalar , Marvin K. Simon
发明人： Dariush Divsalar , Marvin K. Simon
IPC分类号： H04B7/185 , H04B7/208 , H04L1/00 , H04L27/18
CPC分类号： H04L1/0065 , H04B7/18532 , H04L1/0054 , H04L1/006 , H04L1/0071 , H04L27/186 , H04B7/208
摘要： A trellis coded multilevel differential phase shift keyed mobile communication system. The system of the present invention includes a trellis encoder for translating input signals into trellis codes; a differential encoder for differentially encoding the trellis coded signals; a transmitter for transmitting the differentially encoded trellis coded signals; a receiver for receiving the transmitted signals; a differential demodulator for demodulating the received differentially encoded trellis coded signals; and a trellis decoder for decoding the differentially demodulated signals.
摘要翻译：网格编码多级差分相移键控移动通信系统。本发明的系统包括用于将输入信号转换成格状码的网格编码器; 用于对网格编码信号进行差分编码的差分编码器; 用于发送差分编码网格编码信号的发射机; 用于接收发射信号的接收机; 差分解调器，用于解调所接收的差分编码网格编码信号; 以及用于对差分解调信号进行解码的网格解码器。

8. 发明授权

US07693235B2 Reduced complexity coding system using iterative decoding 有权
标题翻译：降低了使用迭代解码的复杂度编码系统
公开(公告)号：US07693235B2
公开(公告)日：2010-04-06
申请号：US11514288
申请日：2006-08-31
申请人： Marvin K. Simon , Dariush Divsalar
发明人： Marvin K. Simon , Dariush Divsalar
IPC分类号： H04L27/20
CPC分类号： H04L1/006 , H04L1/005 , H04L1/0065 , H04L27/186
摘要： A concatenated coding scheme, using an outer coder, interleaver, and the inner coder inherent in an FQPSK signal to form a coded FQPSK signal. The inner coder is modified to enable interative decoding of the outer code.
摘要翻译：使用FQPSK信号固有的外部编码器，交织器和内部编码器的级联编码方案来形成编码的FQPSK信号。内部编码器被修改以允许外部码的交互解码。

9. 发明授权

US07068738B2 FQPSK-B viterbi receiver 失效
公开(公告)号：US07068738B2
公开(公告)日：2006-06-27
申请号：US10051617
申请日：2002-01-16
申请人： Dennis K. Lee , Marvin K. Simon , Tsun-Yee Yan
发明人： Dennis K. Lee , Marvin K. Simon , Tsun-Yee Yan
IPC分类号： H03D3/22
CPC分类号： H04L25/03178 , H04L2025/03407
摘要： An FQPSK-B receiver uses a simplified trellis system which uses combinations of FQPSK-B waveforms to correlate against an input signal. This enables reduction of the number of correlators that are used and the number of comparisons that are made by the correlators.

10. 发明授权

US4945549A Trellis coded modulation for transmission over fading mobile satellite channel 失效
标题翻译：网格编码调制，用于衰落移动卫星信道的传输
公开(公告)号：US4945549A
公开(公告)日：1990-07-31
申请号：US246032
申请日：1988-09-15
申请人： Marvin K. Simon , Dariush Divasalar
发明人： Marvin K. Simon , Dariush Divasalar
IPC分类号： H04B7/185 , H04L27/18
CPC分类号： H04L27/186 , H04B7/18532
摘要： The combination of trellis coding and MPSK signaling with asymmetry (nonuniform spacing) to the signal set is disclosed with regard to its suitability for a fading mobile satellite communication channel. For MPSK signaling, introducing nonuniformity in the phase spacing between signal points provides an improvement in performance over that achievable with trellis codes symmetric MPSK signaling, all this without increasing the average or peak power, or changing the bandwidth constraints imposed on the system. Block interleaving may be used to reduce error and pilot tone(s) may be used for improving the error correction performance of the trellis decoder in the presence of channel fading.
摘要翻译：关于其对于衰落的移动卫星通信信道的适用性，公开了网格编码和MPSK信令与信号组的不对称（不均匀间隔）的组合。对于MPSK信令，在信号点之间的相位间隔引入不均匀性提高了性能，而不是增加平均值或峰值功率，或者改变施加在系统上的带宽限制，可以通过格对码MPSK信号实现。可以使用块交织来减少误差，并且可以使用导频音来在存在信道衰落的情况下改善网格解码器的纠错性能。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式