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1. 发明申请

WO2011150428A1 METHOD AND SYSTEM FOR A LOW-COMPLEXITY SOFT-OUTPUT MIMO DETECTION 审中-公开
标题翻译：用于低复杂度软输出MIMO检测的方法和系统
公开(公告)号：WO2011150428A1
公开(公告)日：2011-12-01
申请号：PCT/US2011/038642
申请日：2011-05-31
申请人： MAXLINEAR, INC. , PATEL, Dimpesh , SHABANY, Mahdi , GULAK, Glenn
发明人： PATEL, Dimpesh , SHABANY, Mahdi , GULAK, Glenn
IPC分类号： H04L27/06
CPC分类号： H04B7/0456 , H04L25/03203
摘要： An approach for Soft-output K-Best MIMO detection comprises computing an estimated symbol vector and Log-Likelihood Ratio (LLR) values for transmitted bits. The approach includes a relevant discarded paths selection process, a last-stage on-demand expansion process, and a relaxed LLR computation process. The relevant discarded paths selection process includes analyzing the K-Best paths and discarded paths at each intermediate tree level and selecting only those discarded paths for further processing that will help in LLR computation for at least one of the transmitted bits. The last-stage on-demand expansion process includes expanding K paths at the tree level 2N T 1 (N T = number of transmit antennas) on-demand to only 2K1 lowest Partial Euclidean Distance (PED) paths at last tree level 2N T . The relaxed LLR computation scheme includes approximating LLR computations by assuming that discarded path PED is greater than or equal K-Best path PED.
摘要翻译：用于软输出K-Best MIMO检测的方法包括计算用于发送位的估计符号向量和对数似然比（LLR）值。该方法包括相关的丢弃路径选择过程，最后一阶段按需扩展过程以及松弛的LLR计算过程。相关丢弃路径选择过程包括分析每个中间树级别的K-Best路径和丢弃路径，并且仅选择那些被丢弃的路径用于进一步处理，这将有助于至少一个发送位的LLR计算。最后阶段按需扩展过程包括根据需要在树级别2NT1（NT =发射天线数）上将K路径扩展到最后树级别2NT处的仅2K1最小部分欧几里德距离（PED）路径。松弛的LLR计算方案包括通过假设丢弃的路径PED大于或等于K-最佳路径PED来近似LLR计算。

2. 发明申请

WO2010135745A1 SIGNAL PROCESSING BLOCK FOR A RECEIVER IN WIRELESS COMMUNICATION 审中-公开
标题翻译：无线通信接收机的信号处理块
公开(公告)号：WO2010135745A1
公开(公告)日：2010-11-25
申请号：PCT/US2010/035989
申请日：2010-05-24
申请人： MAXLINEAR, INC. , PATEL, Dimpesh , GULAK, Glenn , SHABANY, Mahdi
发明人： PATEL, Dimpesh , GULAK, Glenn , SHABANY, Mahdi
IPC分类号： H01Q21/00
CPC分类号： H01Q23/00 , G06F17/16 , H01Q21/28
摘要： A QRD processor for computing input signals in a receiver for wireless communication relies upon a combination of multi-dimensional Givens Rotations, Householder Reflections and conventional two-dimensional (2D) Givens Rotations, for computing the QRD of matrices. The proposed technique integrates the benefits of multi-dimensional annihilation capability of Householder reflections plus the low-complexity nature of the conventional 2D Givens rotations. Such integration increases throughput and reduces the hardware complexity, by first decreasing the number of rotation operations required and then by enabling their parallel execution. A pipelined architecture is presented (290) that uses un-rolled pipelined CORDIC processors (245a to 245d) iteratively to improve throughput and resource utilization, while reducing the gate count.
摘要翻译：用于在无线通信的接收机中计算输入信号的QRD处理器依赖于多维Givens旋转，Householder反射和常规二维（2D）Givens旋转的组合，用于计算矩阵的QRD。所提出的技术整合了众议院反思的多维湮灭能力的好处加上常规2D Givens旋转的低复杂度性质。这种集成通过首先减少所需的旋转操作数量，然后通过使其并行执行来增加吞吐量并降低硬件复杂性。提出了一种流水线架构（290），它可以迭代地使用未压缩的流水线CORDIC处理器（245a到245d）来提高吞吐量和资源利用率，同时减少门数。

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