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公开(公告)号：US20090122925A1
公开(公告)日：2009-05-14
申请号：US12358362
申请日：2009-01-23
IPC分类号： H04L27/06
CPC分类号： H04L1/0066 , H04L1/005 , H04L1/0054 , H04L2027/0028 , H04L2027/0055
摘要： A method for synchronizing receivers that receive turbo encoded signals to a received signal. Turbo encoding may enable signals to be decoded at a much lower signal to noise ratio than previously practical. A traditional method of synchronizing a receiver to an incoming signal is to use a slicer to determine a received symbol and then to compare the determined symbol to the incoming waveform, in order to adjust the phase of the slicer with respect to the incoming signal. At signal low levels, at which turbo encoded signals may be decoded, this slicing method may be prone to errors that may disrupt the synchronization of the receiver to the incoming signal. By replacing the slicer by a Viterbi decoder with zero traceback (i.e., one which does not consider future values of the signal only past values) a prediction as to what the incoming signal is can be made. Because the Viterbi decoder can consider past signal values it can predict the present symbol being received with higher reliability than by using a slicer, which considers only the present value of the incoming signal.
摘要翻译： 一种用于将接收turbo编码信号的接收机同步到接收信号的方法。 Turbo编码可以使信号以比以前实际的低得多的信噪比进行解码。 将接收机同步到传入信号的传统方法是使用限幅器来确定接收到的符号，然后将确定的符号与输入波形进行比较，以便相对于输入信号调节限幅器的相位。 在信号低电平处，可以对Turbo编码信号进行解码，该分片方法可能容易出现可能中断接收机与输入信号的同步的错误。 通过用零回溯的维特比解码器（即，不将信号的未来值仅仅考虑过去的值）来替换限幅器，可以对可以进行什么输入信号进行预测。 因为维特比解码器可以考虑过去的信号值，所以它可以比使用仅考虑输入信号的当前值的限幅器更可靠地预测接收到的当前码元。
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公开(公告)号：US07499507B2
公开(公告)日：2009-03-03
申请号：US09729443
申请日：2000-12-04
IPC分类号： H03D1/00
CPC分类号： H04L1/0066 , H04L1/005 , H04L1/0054 , H04L2027/0028 , H04L2027/0055
摘要： A method for synchronizing receivers that receive turbo encoded signals to a received signal. Turbo encoding may enable signals to be decoded at a much lower signal to noise ratio than previously practical. A traditional method of synchronizing a receiver to an incoming signal is to use a slicer to determine a received symbol and then to compare the determined symbol to the incoming waveform, in order to adjust the phase of the slicer with respect to the incoming signal. At signal low levels, at which turbo encoded signals may be decoded, this slicing method may be prone to errors that may disrupt the synchronization of the receiver to the incoming signal. By replacing the slicer by a Viterbi decoder with zero traceback (i.e. one which does not consider future values of the signal only past values) a prediction as to what the incoming signal is can be made. Because the Viterbi decoder can consider past signal values it can predict the present symbol being received with higher reliability than by using a slicer, which considers only the present value of the incoming signal.
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公开(公告)号：US07848466B2
公开(公告)日：2010-12-07
申请号：US12358362
申请日：2009-01-23
IPC分类号： H04L27/06
CPC分类号： H04L1/0066 , H04L1/005 , H04L1/0054 , H04L2027/0028 , H04L2027/0055
摘要： A method for synchronizing receivers that receive turbo encoded signals to a received signal. Turbo encoding may enable signals to be decoded at a much lower signal to noise ratio than previously practical. A traditional method of synchronizing a receiver to an incoming signal is to use a slicer to determine a received symbol and then to compare the determined symbol to the incoming waveform, in order to adjust the phase of the slicer with respect to the incoming signal. At signal low levels, at which turbo encoded signals may be decoded, this slicing method may be prone to errors that may disrupt the synchronization of the receiver to the incoming signal. By replacing the slicer by a Viterbi decoder with zero traceback (i.e., one which does not consider future values of the signal only past values) a prediction as to what the incoming signal is can be made. Because the Viterbi decoder can consider past signal values it can predict the present symbol being received with higher reliability than by using a slicer, which considers only the present value of the incoming signal.
摘要翻译： 一种用于将接收turbo编码信号的接收机同步到接收信号的方法。 Turbo编码可以使信号以比以前实际的低得多的信噪比进行解码。 将接收机同步到传入信号的传统方法是使用限幅器来确定接收到的符号，然后将确定的符号与输入波形进行比较，以便相对于输入信号调节限幅器的相位。 在信号低电平处，可以对Turbo编码信号进行解码，该分片方法可能容易出现可能中断接收机与输入信号的同步的错误。 通过用零回溯的维特比解码器（即，不将信号的未来值仅仅考虑过去的值）来替换限幅器，可以对可以进行什么输入信号进行预测。 因为维特比解码器可以考虑过去的信号值，所以它可以比使用仅考虑输入信号的当前值的限幅器更可靠地预测接收到的当前码元。
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公开(公告)号：US06985093B2
公开(公告)日：2006-01-10
申请号：US10976277
申请日：2004-10-28
申请人： Steven T. Jaffe , Kelly B. Cameron
发明人： Steven T. Jaffe , Kelly B. Cameron
IPC分类号： H03M7/00
CPC分类号： H04L1/0057 , H03M13/1515 , H03M13/2966 , H04B7/18589 , H04L1/0041 , H04L1/0045 , H04L1/0052 , H04L1/006 , H04L1/0065 , H04L1/0066 , H04L1/0071 , H04L1/0083 , H04L25/0226 , H04L27/0014 , H04L2027/0028 , H04L2027/0034 , H04L2027/0036
摘要： A communications system, having a combination Reed-Solomon encoder and a Turbo-Code encoder Data frame configuration which may be changed to accommodate embedded submarkers of known value. The submarkers are embedded in with the data order to aid synchronization in the receiver system, by providing strings of known symbols. The string of known symbols may be the same as the symbols within a training header that appears at the beginning of a data frame. Frame parameters may be tailored to individual users and may be controlled by information pertaining to receivers, such as bit error rate of the receiver. Additional headers may be interspersed within the data in order to assist in receiver synchronization. Frames of data may be acquired quickly by a receiver by having a string of symbols representing the phase offset between successive header symbols in the header training sequence in order to determine the carrier offset. Phase lock to a signal may be achieved after determining carrier offset in receivers by correlating successive symbols in successive headers.
摘要翻译： 具有Reed-Solomon编码器和Turbo-Code编码器数据帧配置的通信系统，其可以被改变以适应已知值的嵌入式子标记。 通过提供已知符号的字符串，子标记用数据顺序嵌入以辅助接收机系统中的同步。 已知符号串可以与出现在数据帧开始处的训练头中的符号相同。 帧参数可以针对各个用户定制，并且可以由与接收机有关的信息来控制，例如接收机的比特错误率。 额外的头可以散布在数据内，以帮助接收机同步。 为了确定载波偏移，可以由接收机通过在标题训练序列中的连续首标符号之间具有表示相位偏移的符号串来快速获取数据帧。 在确定接收机中的载波偏移之后可以通过将连续的标题中的连续符号相关来来实现对信号的相位锁定。
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公开(公告)号：US06897791B2
公开(公告)日：2005-05-24
申请号：US10828450
申请日：2004-04-20
申请人： Steven T. Jaffe , Kelly B. Cameron
发明人： Steven T. Jaffe , Kelly B. Cameron
CPC分类号： H04L1/0057 , H03M13/1515 , H03M13/2966 , H04B7/18589 , H04L1/0041 , H04L1/0045 , H04L1/0052 , H04L1/006 , H04L1/0065 , H04L1/0066 , H04L1/0071 , H04L1/0083 , H04L25/0226 , H04L27/0014 , H04L2027/0028 , H04L2027/0034 , H04L2027/0036
摘要： A communications system, having a combination Reed-Solomon encoder and a Turbo-Code encoder Data frame configuration which may be changed to accommodate embedded submarkers of known value are embedded in with the data order to aid synchronization in the receiver system, by providing strings of known symbols. The string of known symbols may be the same as the symbols within a training header that appears at the beginning of a data frame. Frame parameters may be tailored to individual users and may be controlled by information pertaining to receivers, such as bit error rate, of the receiver. Additional headers may be interspersed within the data in order to assist in receiver synchronization. Frames of data may be acquired quickly by a receiver by having a string of symbols representing the phase offset between successive header symbols in the header training sequence in order to determine the carrier offset. Phase lock to a signal may be achieved after determining carrier offset in receivers by correlating successive symbols in successive headers. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.
摘要翻译： 具有组合Reed-Solomon编码器和Turbo-Code编码器数据帧配置的通信系统可以被改变以适应已知值的嵌入式子标记，以数据顺序嵌入以辅助接收机系统中的同步，通过提供串 已知符号。 已知符号串可以与出现在数据帧开始处的训练头中的符号相同。 帧参数可以针对个体用户定制，并且可以由与接收机有关的信息（例如接收机的比特错误率）来控制。 额外的头可以散布在数据内，以帮助接收机同步。 为了确定载波偏移，可以由接收机通过在标题训练序列中的连续首标符号之间具有表示相位偏移的符号串来快速获取数据帧。 在确定接收机中的载波偏移之后可以通过将连续的标题中的连续符号相关来来实现对信号的相位锁定。 要强调的是，该摘要被提供以符合要求摘要的规则，这将允许搜索者或其他读者快速确定技术公开的主题。 提交它的理解是，它不会用于解释或限制权利要求的范围或含义。
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公开(公告)号：US06982659B2
公开(公告)日：2006-01-03
申请号：US10751148
申请日：2004-01-02
申请人： Ba-Zhong Shen , Kelly B. Cameron , Steven T. Jaffe
发明人： Ba-Zhong Shen , Kelly B. Cameron , Steven T. Jaffe
IPC分类号： H03M7/00
CPC分类号： H03M13/2906 , H03M13/1105 , H03M13/1111 , H03M13/1128 , H03M13/2975 , H03M13/3753
摘要： Method and apparatus for determining the stopping point of an iterative decoding process. In one embodiment the estimated values of an iteration of an iterative decoder are provided to a signature circuit. If the signature does not differ from the previous signature developed from a prior iteration, or the signature developed from an iteration prior to the previous iteration, the decoding stops. The variance may also be tested and compared to a threshold as a criteria to stop the iterative decoding.
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公开(公告)号：US06891485B2
公开(公告)日：2005-05-10
申请号：US10703286
申请日：2003-11-07
申请人： Steven T. Jaffe , Kelly B. Cameron
发明人： Steven T. Jaffe , Kelly B. Cameron
CPC分类号： H04L1/0057 , H03M13/1515 , H03M13/2966 , H04B7/18589 , H04L1/0041 , H04L1/0045 , H04L1/0052 , H04L1/006 , H04L1/0065 , H04L1/0066 , H04L1/0071 , H04L1/0083 , H04L25/0226 , H04L27/0014 , H04L2027/0028 , H04L2027/0034 , H04L2027/0036
摘要： A communications system, having a combination Reed-Solomon encoder and a Turbo-Code encoder Data frame configuration which may be changed to accommodate embedded submarkers of known value are embedded in with the data order to aid synchronization in the receiver system, by providing strings of known symbols. The string of known symbols may be the same as the symbols within a training header that appears at the beginning of a data frame. Frame parameters may be tailored to individual users and may be controlled by information pertaining to receivers, such as bit error rate, of the receiver. Additional headers may be interspersed within the data in order to assist in receiver synchronization. Frames of data may be acquired quickly by a receiver by having a string of symbols representing the phase offset between successive header symbols in the header training sequence in order to determine the carrier offset. Phase lock to a signal may achieved after determining carrier offset in receivers by correlating successive symbols in successive headers. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.
摘要翻译： 具有组合Reed-Solomon编码器和Turbo-Code编码器数据帧配置的通信系统可以被改变以适应已知值的嵌入式子标记，以数据顺序嵌入以辅助接收机系统中的同步，通过提供串 已知符号。 已知符号串可以与出现在数据帧开始处的训练头中的符号相同。 帧参数可以针对个体用户定制，并且可以由与接收机有关的信息（例如接收机的比特错误率）来控制。 额外的头可以散布在数据内，以帮助接收机同步。 为了确定载波偏移，可以由接收机通过在标题训练序列中的连续首标符号之间具有表示相位偏移的符号串来快速获取数据帧。 通过将连续的标题中的连续符号关联来确定接收机中的载波偏移后，可以实现对信号的相位锁定。 要强调的是，该摘要被提供以符合要求摘要的规则，这将允许搜索者或其他读者快速确定技术公开的主题。 提交它的理解是，它不会用于解释或限制权利要求的范围或含义。
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公开(公告)号：US06693566B2
公开(公告)日：2004-02-17
申请号：US09729442
申请日：2000-12-04
申请人： Steven T. Jaffe , Kelly B. Cameron
发明人： Steven T. Jaffe , Kelly B. Cameron
IPC分类号： H03M700
CPC分类号： H04L1/0057 , H03M13/1515 , H03M13/2966 , H04B7/18589 , H04L1/0041 , H04L1/0045 , H04L1/0052 , H04L1/006 , H04L1/0065 , H04L1/0066 , H04L1/0071 , H04L1/0083 , H04L25/0226 , H04L27/0014 , H04L2027/0028 , H04L2027/0034 , H04L2027/0036
摘要： A communications system, having a combination Reed-Solomon encoder and a Turbo-Code encoder Data frame configuration which may be changed to accommodate embedded submarkers of known value are embedded in with the data order to aid synchronization in the receiver system, by providing strings of known symbols. The string of known symbols may be the same as the symbols within a training header that appears at the beginning of a data frame. Frame parameters may be tailored to individual users and may be controlled by information pertaining to receivers, such as bit error rate, of the receiver. Additional headers may be interspersed within the data in order to assist in receiver synchronization. Frames of data may be acquired quickly by a receiver by having a string of symbols representing the phase offset between successive header symbols in the header training sequence in order to determine the carrier offset. Phase lock to a signal may achieved after determining carrier offset in receivers by correlating successive symbols in successive headers. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.
摘要翻译： 具有组合Reed-Solomon编码器和Turbo-Code编码器数据帧配置的通信系统可以被改变以适应已知值的嵌入式子标记，以数据顺序嵌入以辅助接收机系统中的同步，通过提供串 已知符号。 已知符号串可以与出现在数据帧开始处的训练头中的符号相同。 帧参数可以针对个体用户定制，并且可以由与接收机有关的信息（例如接收机的比特错误率）来控制。 额外的头可以散布在数据内，以帮助接收机同步。 为了确定载波偏移，可以由接收机通过在标题训练序列中的连续首标符号之间具有表示相位偏移的符号串来快速获取数据帧。 通过将连续的标题中的连续符号关联来确定接收机中的载波偏移后，可以实现对信号的相位锁定。 要强调的是，该摘要被提供以符合要求摘要的规则，这将允许搜索者或其他读者快速确定技术公开的主题。 提交它的理解是，它不会用于解释或限制权利要求的范围或含义。
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公开(公告)号：US06518892B2
公开(公告)日：2003-02-11
申请号：US09900222
申请日：2001-07-06
申请人： Ba-Zhong Shen , Kelly B. Cameron , Steven T. Jaffe
发明人： Ba-Zhong Shen , Kelly B. Cameron , Steven T. Jaffe
IPC分类号： H03M700
CPC分类号： H03M13/2906 , H03M13/1105 , H03M13/1111 , H03M13/1128 , H03M13/2975 , H03M13/3753
摘要： Method and apparatus for determining the stopping point of an iterative decoding process. In one embodiment the estimated values of an iteration of an iterative decoder are provided to a signature circuit. If the signature does not differ from the previous signature developed from a prior iteration, or the signature developed from an iteration prior to the previous iteration, the decoding stops. The variance may also be tested and compared to a threshold as a criteria to stop the iterative decoding.
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公开(公告)号：US07420481B2
公开(公告)日：2008-09-02
申请号：US11116851
申请日：2005-04-28
申请人： Steven T. Jaffe , Kelly B. Cameron
发明人： Steven T. Jaffe , Kelly B. Cameron
IPC分类号： H03M7/34
CPC分类号： H04L1/0057 , H03M13/1515 , H03M13/2966 , H04B7/18589 , H04L1/0041 , H04L1/0045 , H04L1/0052 , H04L1/006 , H04L1/0065 , H04L1/0066 , H04L1/0071 , H04L1/0083 , H04L25/0226 , H04L27/0014 , H04L2027/0028 , H04L2027/0034 , H04L2027/0036
摘要： A communications system, having a combination Reed-Solomon encoder and a Turbo-Code encoder Data frame configuration which may be changed to accommodate embedded submarkers of known value are embedded in with the data order to aid synchronization in the receiver system, by providing strings of known symbols. The string of known symbols may be the same as the symbols within a training header that appears at the beginning of a data frame. Frame parameters may be tailored to individual users and may be controlled by information pertaining to receivers, such as bit error rate, of the receiver. Additional headers may be interspersed within the data in order to assist in receiver synchronization. Frames of data may be acquired quickly by a receiver by having a string of symbols representing the phase offset between successive header symbols in the header training sequence in order to determine the carrier offset.
摘要翻译： 具有组合Reed-Solomon编码器和Turbo-Code编码器数据帧配置的通信系统可以被改变以适应已知值的嵌入式子标记，以数据顺序嵌入以辅助接收机系统中的同步，通过提供串 已知符号。 已知符号串可以与出现在数据帧开始处的训练头中的符号相同。 帧参数可以针对个体用户定制，并且可以由与接收机有关的信息（例如接收机的比特错误率）来控制。 额外的头可以散布在数据内，以帮助接收机同步。 为了确定载波偏移，可以由接收机通过在标题训练序列中的连续首标符号之间具有表示相位偏移的符号串来快速获取数据帧。
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