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1. 发明申请

WO2004098141A1 MULTIUSER DETECTION AIDED MULTIPLE ACCESS DIFFERENTIAL FREQUENCY-HOPPED SPREAD SPECTRUM 审中-公开
标题翻译：多用户检测辅助多路访问差分频率扩展频谱
公开(公告)号：WO2004098141A1
公开(公告)日：2004-11-11
申请号：PCT/US2003/024920
申请日：2003-08-07
申请人： BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC , MILLS, Diane, G. , EDELSON, Geoff, S. , EGNOR, Dianne, E.
发明人： MILLS, Diane, G. , EDELSON, Geoff, S. , EGNOR, Dianne, E.
IPC分类号： H04L27/30
CPC分类号： H04B1/715 , H04B1/713 , H04B2001/7152
摘要： Techniques for multiple access differential frequency-hopped spread spectrum (MA-DFHSS) aided by multiuser detection (MUD) (640) are disclosed. An initial DFH decoding (510) is performed to provide data estimates (435) for each user (640) represented in a received co-channel signal (400) . Interference cancellation is the performed using MUD (640), thereby providing an interference-cancelled signal (540). Data estimates remaining are then re-decoded. Iteration on the interference cancellation and re-decoding can be carried out to satisfy a particular rule of iteration, although iteration is not always necessary. The final decoded signal (565) can then be provided to its destination.
摘要翻译：公开了多用户检测（MUD）（640）辅助的多路访问差分跳频扩频（MA-DFHSS）技术。执行初始DFH解码（510）以为接收到的同频道信号（400）中表示的每个用户（640）提供数据估计（435）。使用MUD（640）执行干扰消除，从而提供干扰消除信号（540）。然后重新解码剩余的数据估计。可以进行干扰消除和重新解码的迭代以满足特定的迭代规则，尽管迭代并不总是必需的。然后可以将最终解码信号（565）提供给其目的地。

2. 发明申请

WO2004098142A1 MULTIUSER DETECTION AIDED MULTIPLE ACCESS DIFFERENTIAL M-ARY CODING APPLICATIONS 审中-公开
标题翻译：多媒体检测辅助多路访问差分M-ARY编码应用
公开(公告)号：WO2004098142A1
公开(公告)日：2004-11-11
申请号：PCT/US2004/012414
申请日：2004-04-22
申请人： BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC , MILLS, Diane, G. , EDELSON, Geoffrey, S. , EGNOR, Dianne, E.
发明人： MILLS, Diane, G. , EDELSON, Geoffrey, S. , EGNOR, Dianne, E.
IPC分类号： H04L27/30
CPC分类号： H04L1/006 , H04B1/713 , H04B2001/7152 , H04L1/0054
摘要： Techniques for multiple access differential M-ary coding applications that can be optionally aided by multiuse detection (MUD) are disclosed. An initial hopped feature decoding is performed to provide data estimates for each user represented in a received co-channel signal (720). Interference cancellation can then be performed using MUD, there by providing an interference-cancelled signal (725). Data estimates remaining are then re-decoded (730). Interation on the interference cancellation and re-decoding can be carried out to satisfy a particular rule of iteration (735), although iteration is not always necessary. The final decoded signal can then be provided to its destination (740).
摘要翻译：公开了可以由多用途检测（MUD）辅助的多址差分M进制编码应用的技术。执行初始跳跃特征解码以提供在接收到的同频道信号中表示的每个用户的数据估计（720）。然后可以通过提供干扰消除信号（725）的MUD来执行干扰消除。然后重新解码剩余的数据估计（730）。可以进行干扰消除和重新解码的干扰以满足特定的迭代规则（735），尽管迭代并不总是必需的。然后可以将最终的解码信号提供给其目的地（740）。

3. 发明申请

WO2005125137A2 MULTIUSER DETECTION WITH TARGETED ERROR CORRECTION CODING 审中-公开
标题翻译：多重检测与指定的错误修正编码
公开(公告)号：WO2005125137A2
公开(公告)日：2005-12-29
申请号：PCT/US2004/026254
申请日：2004-08-11
申请人： BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC. , MILLS, Diane, G.
发明人： MILLS, Diane, G.
IPC分类号： H04L27/06
CPC分类号： H04B1/7103 , H03M13/2957 , H03M13/37 , H03M13/63 , H04B1/7105 , H04L1/0048 , H04L1/005 , H04L1/0071 , H04L25/03171
摘要： An error correction decoding (ECC) processing scheme is disclosed that reduces computational complexity normally associated with multiuser detection (e.g., TurboMUD) solutions, without causing degradation in quality of service or decreasing the total throughput. Error correction decoding algorithms are applied only to portions of the estimates that were affected by the immediately previous MUD update process. Even though the MUD and/or ECC updating is targeted so as to reduce complexity of each iteration, all of the estimates are maintained and remain candidates for future updates. As such, there is no negative impact real-time or future performance. This targeting approach can be used in conjunction with many variations of MUD, including full-complexity or reduced complexity, and may include MUD with confidence ordering or voting, and other techniques for facilitating e fficient and effective MUD processing.
摘要翻译：公开了一种降低与多用户检测（例如，TurboMUD）解决方案通常相关联的计算复杂度的纠错解码（ECC）处理方案，而不会降低服务质量或降低总吞吐量。误差校正解码算法仅适用于受即时MUD更新过程影响的估计部分。即使MUD和/或ECC更新是针对性的，以减少每次迭代的复杂性，所有的估计都被维护，并且仍然是未来更新的候选者。因此，实时或未来的表现没有负面影响。这种目标方法可以与MUD的许多变体一起使用，包括完全复杂性或降低的复杂性，并且可以包括具有置信排序或投票的MUD以及用于促进有效和有效的MUD处理的其它技术。

4. 发明申请

WO2005046060A1 METHOD AND APPARATUS FOR IMPROVED TURBO MULTIUSER DETECTOR 审中-公开
标题翻译：改进的涡轮多功能探测器的方法和装置
公开(公告)号：WO2005046060A1
公开(公告)日：2005-05-19
申请号：PCT/US2003/032335
申请日：2003-10-09
申请人： BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC. , MILLS, Diane, G.
发明人： MILLS, Diane, G.
IPC分类号： H03M13/03
CPC分类号： H04L1/005 , H04L1/0048 , H04L1/0071 , H04L25/03171 , H04L25/03331 , H04L2025/03611
摘要： A multi-user turbo decoder (14) combining multi-user detection and forward error correction decoding is disclosed using iterative decoding of received, interfering signals.The construction of a decoding tree of the decoder is changed for each iteration of the decoding based on previous conditional probability estimates of the value of the data bits of each received, interfering signals. Before each iteration of multi-user decoding, a probability estimate is calculated that the value of the bit in a signal has a certain value for all of the bits. Using the probability estimate a decoding tree is constructed before each iteration such that the most reliable signal bit estimate is assigned to the lowest or root level of the tree. Using the probability estimate for the other signal bits, the signal bit having the next most reliable estimate is assigned to the second level of the tree, and so forth.
摘要翻译：通过对接收到的干扰信号进行迭代解码，公开了组合多用户检测和前向纠错解码的多用户turbo解码器（14）。基于先前的解码器，解码器的解码树的构造改变了每次迭代每个接收到的干扰信号的数据位的值的条件概率估计。在多用户解码的每次迭代之前，计算出一个概率估计，即信号中的比特值对于所有比特都具有一定的值。使用概率估计，在每次迭代之前构造解码树，使得最可靠的信号比特估计被分配给树的最低或根级别。使用其他信号位的概率估计，将具有次最可靠估计的信号位分配给树的第二级，等等。

5. 发明申请

WO2005046061A1 METHOD AND APPARATUS FOR RANDOM SHUFFLED TURBO MULTIUSER DETECTOR 审中-公开
标题翻译：随机抽取式涡轮多路器检测器的方法与装置
公开(公告)号：WO2005046061A1
公开(公告)日：2005-05-19
申请号：PCT/US2003/032338
申请日：2003-10-09
申请人： BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC. , MILLS, Diane, G.
发明人： MILLS, Diane, G.
IPC分类号： H03M13/03
CPC分类号： H04L25/03171 , H03M13/2957 , H03M13/63 , H04B1/7105 , H04L25/03216 , H04L25/03299 , H04L25/03331 , H04L2025/03611
摘要： A multi-user turbo decoder combining multi-user detection and forward error correction decoding is disclosed in which randomly ordered indices (19) are assigned to interfering users before a decoding tree is constructed in the multi-user decoder for each symbol interval for every iteration and for each new block of data. By building the decoding tree in this manner for each symbol interval, a reduced complexity search is more likely to include paths (and nodes) in the tree containing the correct value for the channel symbols. All users (16) thus share in the benefit of root level placement in the decoding tree (14). In an alternative embodiment of the invention only one decoding pass (16) is accomplished and there is no re-construction of the decoding tree based on further random index ordering (29) for iterative decoding. No modification to the transmitted signaling method is needed.
摘要翻译：公开了组合多用户检测和前向纠错解码的多用户turbo解码器，其中在针对每个迭代的每个符号间隔在多用户解码器中构造解码树之前，随机排列的索引（19）被分配给干扰用户并为每个新的数据块。通过以这种方式为每个符号间隔构建解码树，减少复杂度的搜索更可能包括树中包含用于信道符号的正确值的路径（和节点）。因此，所有用户（16）共享在解码树（14）中的根级别放置的益处。在本发明的替代实施例中，仅完成一个解码遍（16），并且基于用于迭代解码的进一步的随机索引排序（29）不再重新构建解码树。不需要修改发送的信令方法。

6. 发明申请

WO2004100416A1 CROSS-SYSTEM INTERFERENCE CANCELLATION FOR MULTICARRIER CDMA AND OFDM 审中-公开
标题翻译：用于MULTICARRIER CDMA和OFDM的交叉系统干扰消除
公开(公告)号：WO2004100416A1
公开(公告)日：2004-11-18
申请号：PCT/US2003/020484
申请日：2003-06-30
申请人： BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION, INC. , MILLS, Diane, G. , KOTRLIK, Michael, J. , KARWEDSKY, Kari, M.
发明人： MILLS, Diane, G. , KOTRLIK, Michael, J. , KARWEDSKY, Kari, M.
IPC分类号： H04K1/10
CPC分类号： H04B1/7107 , H04B1/692 , H04B1/7103 , H04B1/71075 , H04B2201/70702 , H04J11/0023 , H04L5/026 , H04L25/03159 , H04L27/2601 , H04L2025/03414
摘要： Interference cancellation techniques for use in a wireless multicarrier communications system where signals from multiple wireless networks might be present and interfering with the detection and demodulation processes are disclosed. Interference cancellation (103) is applied to the interfering network before removing same-system interference (107). By removing the contribution of all interfering systems from a receiver's aggregate signal, the receiver is capable of detection and demodulation. Performance can be further improved by including an additional level of interference cancellation within the system of interest to separate the individual user of interest.
摘要翻译：公开了一种用于在来自多个无线网络的信号可能存在并且干扰检测和解调过程的无线多载波通信系统中的干扰消除技术。在去除同系统干扰之前，将干扰消除（103）应用于干扰网络（107）。通过从接收机的聚合信号中消除所有干扰系统的贡献，接收机能够进行检测和解调。通过在感兴趣的系统内包括额外的干扰消除水平来分离感兴趣的个体用户，可以进一步改善性能。

7. 发明申请

WO2004012341A1 POWER AND CONFIDENCE ORDERED LOW COMPLEXITY SOFT TURBOMUD WITH VOTING SYSTEM 审中-公开
标题翻译：功率和信心低廉的复杂软件涡轮机与投票系统
公开(公告)号：WO2004012341A1
公开(公告)日：2004-02-05
申请号：PCT/US2003/015503
申请日：2003-05-14
申请人： BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC , MILLS, Diane, G. , LEARNED, Rachel, E.
发明人： MILLS, Diane, G. , LEARNED, Rachel, E.
IPC分类号： H03M13/23
CPC分类号： H04L25/067 , H03M13/2957 , H04B1/7105 , H04J13/0077 , H04L1/0048 , H04L1/005 , H04L1/0066 , H04L1/0071 , H04L25/0204 , H04L25/03171 , H04L25/03203 , H04L25/03216 , H04L25/03286 , H04L25/03331 , H04L2025/03611
摘要： A real-time multi-user detection (MUD) receiver processing simultaneous digitally modulated interferers and transmissions in the same frequency optimizing performance for heavily loaded and overloaded multiple access systems implementing an iterative TurboMUD receiver using tree-pruning, including confidence ordering, power-ordering, and a voting procedure (330). On the first iteration, user indices are ordered according to received powers. On subsequent iterations, the voting system provides soft decisions or confidence values utilized as soft inputs to single-user decoders (340). Voting (330) is computationally attractive and allows the bank of decoders to operate on soft values, improving performance and reducing the number of turboMUD iterations. The bank of soft output error correction decoders produces an improved set of soft decisions or confidence values corresponding to the channel bits transmitted by each interfering user. Confidence values from the bank of decoders are used to order user indices, allowing the tree pruned MUD detector (320) to operate on the most reliable symbols first, improving the likelihood that pruning is correct. Subsequent confidence ordering and estimate refinement occurs until conditions are satisfied and iterative processing completed.
摘要翻译：实时多用户检测（MUD）接收机处理同时数字调制的干扰信号和传输，以相同的频率优化性能，用于使用树修剪（包括置信排序，功率排序）实现迭代式TurboMUD接收机的重负载和过载的多址系统和一个投票程序（330）。在第一次迭代中，用户索引根据接收的功率进行排序。在随后的迭代中，投票系统提供用作单用户解码器的软输入的软判决或置信度值（340）。投票（330）在计算上是有吸引力的，并且允许解码器组以软值操作，提高性能并减少turboMUD迭代的数量。软输出纠错解码器组产生对应于每个干扰用户发送的信道位的改进的一组软判决或置信度值。来自解码器组的置信度值用于对用户索引进行排序，允许树剪枝MUD检测器（320）首先对最可靠的符号进行操作，从而提高修剪正确的可能性。随后的置信排序和估计细化发生，直到满足条件并且迭代处理完成。

8. 发明申请

WO2004098071A2 SOFT-DECISION TRELLIS-CODED DIFFERENTIAL FREQUENCY-HOPPED SPREAD SPECTRUM(DFHSS) 审中-公开
标题翻译：软决策TRLLIS编码的差分频率扩展频谱（DFHSS）
公开(公告)号：WO2004098071A2
公开(公告)日：2004-11-11
申请号：PCT/US2004/012483
申请日：2004-04-21
申请人： BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC. , MILLS, Diane, G. , MYERS, Cory, S , EDELSON, Geoffrey, S. , HERRICK, David, L.
发明人： MILLS, Diane, G. , MYERS, Cory, S , EDELSON, Geoffrey, S. , HERRICK, David, L.
IPC分类号： H04B
CPC分类号： H04L1/006 , H04B1/713 , H04B2001/7152 , H04L1/0054
摘要： A method and system begin at a random node of a trellis model having a set of at least two axes, wherein one axis corresponds to time and a second axis corresponds to frequency, a set of M states, corresponding to a set of all possible frequencies that may be transmitted by the system, and branches leaving each state, that terminate at allowable transmit frequencies for a next frequency hop. The number of branches leaving each state is dependent on the number of encoded bits per hop. Next, B bits of data are passed to a buffer, where B is the number of bits that will be transmitted per frequency hop. The method and system then combine the B bits of data with information for previously selected frequencies to select a current frequency, transmit the selected frequency, and feedback the currently selected frequency information to be used as previously selected frequency information when selecting a next frequency.
摘要翻译：一种方法和系统从具有一组至少两个轴的网格模型的随机节点开始，其中一个轴对应于时间，第二轴对应于频率，一组M个状态，对应于一组所有可能的频率可以由系统发送，并且离开每个状态的分支，以可允许的发射频率终止下一个跳频。离开每个状态的分支数取决于每跳的编码比特数。接下来，将B位数据传送到缓冲器，其中B是每跳频将被发送的位数。该方法和系统然后将B位数据与先前选择的频率的信息组合以选择当前频率，发送所选择的频率，并且在选择下一个频率时反馈当前选择的频率信息以用作先前选择的频率信息。

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