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31. 发明授权

US06629286B1 Method and device for assessing the quality of service on transmission channels in a digital transmission system 有权
标题翻译：用于评估数字传输系统中传输通道的服务质量的方法和装置
公开(公告)号：US06629286B1
公开(公告)日：2003-09-30
申请号：US09510639
申请日：2000-02-22
申请人： Friedbert Berens , Markus Doetsch , Jörg Plechinger , Peter Jung
发明人： Friedbert Berens , Markus Doetsch , Jörg Plechinger , Peter Jung
IPC分类号： H03M1329
CPC分类号： H04L1/20 , H03M13/2957 , H03M13/2975 , H03M13/299 , H03M13/353 , H03M13/3738 , H03M13/6381 , H04L1/0041 , H04L1/005 , H04L1/0059 , H04L1/0066 , H04L1/0068
摘要： A quality of service on transmission channels in a digital transmission system is assessed. A turbo coding is carried out in a turbo coder at the transmitter end for channel coding. A turbo decoding is carried out in a turbo decoder with soft-decision output signals at the receiver end. The quality of service is determined from the variances of the soft-decision output signals from the turbo decoder. If a MAP (maximum a posteriori) symbol estimator is used at the receiver end, the quality of service is determined from the variance &sgr;2LLR of the log-likelihood ratio LLR of the soft-decision output signals from the turbo decoder. The variances &sgr;2LLR are used to calculate the bit error rate as a measure of the quality of service. An RCPTC (Rate Compatible Punctured Turbo Code) is used as the turbo code for the method and in the device for assessing the quality of service.
摘要翻译：评估数字传输系统中传输信道的服务质量。在用于信道编码的发射机端的turbo编码器中执行turbo编码。在具有接收机端的软判定输出信号的turbo解码器中进行turbo解码。服务质量根据turbo解码器的软判决输出信号的方差确定。如果在接收机端使用MAP（最大后验）符号估计器，则从turbo解码器的软判决输出信号的对数似然比LLR的方差σ2确定服务质量。方差σ<2> LLR用于计算误码率作为服务质量的度量。使用RCPTC（速率兼容的穿刺Turbo码）作为方法的turbo码，以及用于评估服务质量的设备。

32. 发明授权

US06571366B1 Method for packet transmission with an ARQ protocol on transmission channels in a digital transmission system 有权
标题翻译：在数字传输系统的传输通道上使用ARQ协议进行数据包传输的方法
公开(公告)号：US06571366B1
公开(公告)日：2003-05-27
申请号：US09486335
申请日：2000-02-22
申请人： Markus Doetsch , Jörg Plechinger , Peter Jung , Friedbert Berens
发明人： Markus Doetsch , Jörg Plechinger , Peter Jung , Friedbert Berens
IPC分类号： H03M1329
CPC分类号： H03M13/2975 , H03M13/6381
摘要： In a method for packet transmission using an ARQ protocol on transmission channels in a digital transmission system, for channel coding, turbo coding is carried out in a turbo coder at the transmitter end and turbo decoding is carried out in a turbo decoder at the receiver end using soft-decision output signals. A return channel is provided, which the receiver uses to request the information from faulty packets once again. An RCPTC is used as the turbo code. When the information in a faulty packet is retransmitted, at least a portion of the information suppressed by the puncturing of the RCPTC in the previous transmission is transmitted. This additional information is inserted into the already existing information at the receiver end, and this completed information is decoded once again. When the repeat transmission is made, the only bits which are transmitted are those which are additionally available at the next lower coding rate, since they are not punctured. The method is repeated, until the packet is decoded without any errors or all of the coded information in a packet is transmitted.
摘要翻译：在数字传输系统的传输信道上使用ARQ协议进行分组传输的方法中，对于信道编码，在发射机端的turbo编码器中进行turbo编码，并在接收机端的turbo解码器中进行turbo解码使用软判决输出信号。提供返回信道，接收机再次使用该信道来请求故障信息。 RCPTC用作turbo码。当重传故障分组中的信息时，发送通过在先前传输中的RCPTC的删截所抑制的信息的至少一部分。该附加信息被插入到接收端已存在的信息中，并且该完成的信息被再次被解码。当进行重复发送时，发送的唯一比特是由于它们没有被打孔而在下一个较低编码率下额外可用的那些比特。该方法被重复，直到分组被解码而没有任何错误或分组中的所有编码信息被发送。

33. 发明授权

US06513140B2 Method and device for decoding convolutional codes 有权
公开(公告)号：US06513140B2
公开(公告)日：2003-01-28
申请号：US09910341
申请日：2001-07-20
申请人： Markus Dötsch , Peter Jung , Jörg Plechinger , Peter Schmidt
发明人： Markus Dötsch , Peter Jung , Jörg Plechinger , Peter Schmidt
IPC分类号： H03M1303
CPC分类号： H03M13/3905 , H03M13/2957 , H03M13/6331
摘要： Convolutional codes are decoded by calculating, for uncoded and coded symbols, a first and/or second item of reliability information (&Lgr;u and &Lgr;c respectively). The item of reliability information is representative of the probability that the considered nth uncoded or coded symbol is equal to a value i of the symbol set, under the condition that a specific sequence of received coded symbols is present. An approximate expression is proposed for calculating the second item of reliability information.

34. 发明授权

US06307851B1 System for radio transmission of digital signals between a plurality of subscriber stations and base station 失效
标题翻译：用于在多个用户站和基站之间进行数字信号的无线电传输的系统
公开(公告)号：US06307851B1
公开(公告)日：2001-10-23
申请号：US09171069
申请日：1998-10-09
申请人： Peter Jung , Friedbert Berens , Paul-Walter Baier , Jörg Plechinger , Karl Kammerlander
发明人： Peter Jung , Friedbert Berens , Paul-Walter Baier , Jörg Plechinger , Karl Kammerlander
IPC分类号： H04B7216
CPC分类号： H04L5/026 , H04B7/08 , H04L1/06 , H04L25/03038 , H04L27/2647 , H04L2025/03414 , H04L2025/03605
摘要： The new CDMA (Code Division Multiple Access) system structure which is equivalent to the structure of a CDMA system operating with direct code spread (DS, Direct Sequence) but operates with multicarrier (MC) methods. The multicarrier method is introduced a suitable selection of the spread code, with the result that the production of signals in CDMA systems with DS and with MC is harmonized and JD (Joint Detection) multisubscriber detection methods, which are known per se, with or without diversity reception can be used.
摘要翻译：新的CDMA（码分多址）系统结构相当于使用直接码扩展（DS，直接序列）运行的CDMA系统的结构，但是以多载波（MC）方式运行。引入了多载波方法的扩展码的适当选择，结果是使用DS和MC的CDMA系统中的信号的产生是协调的，并且本身已知的JD（Joint Detection）多订户检测方法，具有或不具有可以使用分集接收。

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