公开(公告)号：US20040234007A1

公开(公告)日：2004-11-25

申请号：US10863081

申请日：2004-06-08

Applicant: BAE SYSTEMS Information and Electronic Systems Integration Inc.

Inventor： Diane G. Mills

IPC: H04L027/06

CPC classification number: H04B1/7103 ,  H03M13/2957 ,  H03M13/37 ,  H03M13/63 ,  H04B1/7105 ,  H04L1/0048 ,  H04L1/005 ,  H04L1/0071 ,  H04L25/03171

Abstract: 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 efficient and effective MUD processing.

Abstract translation: 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MUD处理的其它技术。

公开(公告)号：US20030138035A1

公开(公告)日：2003-07-24

申请号：US10055155

申请日：2002-01-23

Applicant: BAE SYSTEMS Information and Electronic Systems Integration, Inc.

Inventor： Diane G. Mills

IPC: H04Q001/20 ,  H04B003/46

CPC classification number: H04L1/005 ,  H04B1/7105 ,  H04L1/0048 ,  H04L25/03171 ,  H04L25/03286 ,  H04L25/03331 ,  H04L2025/03611

Abstract: A system is presented that provides real-time performance for iterative multi-user detectors, such as Turbo MUDs, which are used to separate simultaneous transmissions on the same frequency, by permitting the MUD to use a less computationally intense, fast-processing algorithm and to correct for errors caused by the fast processing. In order to reduce the errors, a voting system is coupled to the output of the multi-user detector within the iterative system. The voting system provides confidence values on a bit-by-bit basis for the estimates made by the multi-user detector, with the confidence values then being utilized as soft inputs to a bank of conventional single-user decoders.

Abstract translation: 提出了一种系统，其为迭代多用户检测器（例如Turbo MUD）提供实时性能，其用于通过允许MUD使用较少的计算强度快的处理算法来在同一频率上分离同时传输， 纠正快速处理造成的错误。 为了减少错误，投票系统耦合到迭代系统内的多用户检测器的输出。 投票系统针对多用户检测器的估计逐位提供置信度值，然后将置信度值用作传统单用户解码器组的软输入。