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    • 1. 发明申请
    • FRACTIONAL SYMBOL BASED PHASE NOISE MITIGATION
    • 基于相关符号的相位噪声缓解
    • WO2013100891A1
    • 2013-07-04
    • PCT/US2011/067335
    • 2011-12-27
    • INTEL CORPORATIONRUBIN, AmirGUREVITZ, AssafPARYANTI, Gil
    • RUBIN, AmirGUREVITZ, AssafPARYANTI, Gil
    • H04L27/26H04L27/01
    • H04B1/12H04L25/03159H04L25/03993H04L27/2647H04L27/2657H04L27/2671H04L2027/003H04L2027/0034H04L2027/0038H04L2027/0046H04L2027/0067H04L2027/0085
    • Fractional symbol based phase noise mitigation, including methods and systems to determine phase noise trajectory, or indication of phase noise, for each of multiple fractional portions of a frequency domain symbol, and modify the symbol based on the phase noise trajectories of the subsets. Multiple correction hypotheses may be generated for each fractional portion of the symbol based on pre-defined phase noise hypotheses. The correction hypotheses may include frequency domain correction hypotheses. The correction hypotheses for a subset may be evaluated to select one of the phase noise hypotheses as the trajectory for the subset. The evaluation may include applying each correction hypothesis to a corresponding equalized frequency domain symbol to generate corresponding symbol hypotheses, computing a signal quality for each symbol hypothesis, and comparing the signal qualities. Signal qualities may be determined as error vector magnitudes, and may be based on all or a subset of corresponding symbol tones.
    • 基于分数符号的相位噪声减轻,包括确定相位噪声轨迹的方法和系统,或对于频域符号的多个小数部分中的每一个的相位噪声的指示,以及基于子集的相位噪声轨迹修改符号。 可以基于预定义的相位噪声假设为符号的每个小数部分生成多个校正假设。 修正假设可能包括频域校正假设。 可以评估子集的校正假设以选择相位噪声假设之一作为子集的轨迹。 评估可以包括将每个校正假设应用于对应的均衡频域符号以产生相应的符号假设,计算每个符号假设的信号质量,以及比较信号质量。 信号质量可以被确定为误差矢量幅度,并且可以基于相应符号音调的全部或一个子集。
    • 5. 发明申请
    • ACCESS POINT (AP), STATION (STA) AND METHOD FOR SUBCARRIER SCALING
    • 接入点(AP),站(STA)和用于子载波缩放的方法
    • WO2017155649A2
    • 2017-09-14
    • PCT/US2017/016709
    • 2017-02-06
    • INTEL IP CORPORATIONLI, QinghuaGUREVITZ, AssafWEISMAN, Tzahi
    • LI, QinghuaGUREVITZ, AssafWEISMAN, TzahiCHEN, Xiaogang
    • H04L5/00H04L27/26H04W72/04H04W88/08
    • Embodiments of an access point (AP), station (STA) and method for subcarrier scaling are generally described herein. The AP may transmit a high efficiency (HE) physical layer convergence procedure (PLCP) protocol data unit (PPDU) that includes a legacy long training field (L-LTF), a legacy signal (L-SIG) field, and an HE signal (HE-SIG) field. The HE-SIG may be based on HE-SIG symbols mapped to a group of HE subcarriers that includes legacy subcarriers and HE extension subcarriers. The L-LTF may be based on L-LTF pilot symbols mapped to the legacy subcarriers. The L-SIG may be based on L-SIG legacy symbols mapped to the legacy subcarriers and L-SIG extension pilot symbols mapped to the HE extension subcarriers. The AP may scale a per-subcarrier power of the L-SIG extension pilot symbols to match a per-subcarrier power of the L-LTF pilot symbols.
    • 本文一般描述接入点(AP),站(STA)和用于子载波缩放的方法的实施例。 AP可传输包括传统长训练字段(L-LTF),传统信号(L-SIG)字段和HE信号的高效率(HE)物理层会聚过程(PLCP)协议数据单元 (HE-SIG)领域。 HE-SIG可以基于被映射到包括传统子载波和HE扩展子载波的一组HE子载波的HE-SIG符号。 L-LTF可以基于映射到传统子载波的L-LTF导频符号。 L-SIG可基于映射到传统副载波的L-SIG传统符号和映射到HE扩展副载波的L-SIG扩展导频符号。 AP可以缩放L-SIG扩展导频符号的每个子载波功率以匹配L-LTF导频符号的每个子载波功率。
    • 6. 发明申请
    • INTERLEAVING CIRCUIT FOR A MULTIBAND OFDM TRANSCEIVER
    • 用于多个OFDM收发器的交互电路
    • WO2005055544A1
    • 2005-06-16
    • PCT/EP2004/013594
    • 2004-11-30
    • INFINEON TECHNOLOGIES AGERLICH, YossiGUREVITZ, Assaf
    • ERLICH, YossiGUREVITZ, Assaf
    • H04L27/26
    • H04L1/0071H03M13/271H03M13/275H03M13/276H04B1/71635H04L1/007H04L1/0072H04L1/04H04L27/2602
    • Interleaving circuit for a multiband OFDM (orthogonal frequency division multiplexing) transceiver of a ultra wide band wireless personal access network transmitting OFDM modulated symbols, wherein each OFDM symbol consists of a predetermined number (N CBPS ) of encoded bits, said interleaving circuit comprising a symbol interleaving unit which receives an input bitstream of encoded bits and permutes adjacent bits of said input bitstream across different OFDM symbols; an intra-symbol tone interleaving unit which receives the bits permuted by said symbol interleaving unit and permutes adjacent bits of each OFDM symbol across uncorrelated data sub-carriers; and an intra-symbol cyclic shift unit which shifts cyclically N CBPS bits of each OFDM symbol in response to a shift value (K) which is changed between adjacent OFDM symbols.
    • 用于发射OFDM调制符号的超宽带无线个人接入网络的多频带OFDM(正交频分复用)收发机的交织电路,其中每个OFDM符号由预定数量(NCBPS)的编码比特组成,所述交织电路包括符号交织 单元,其接收编码比特的输入比特流并且在不同的OFDM符号之间排列所述输入比特流的相邻比特; 符号间音调交错单元,其接收由所述符号交织单元置换的比特,并且跨越不相关的数据子载波排列每个OFDM符号的相邻比特; 以及符号间循环移位单元,其响应于在相邻OFDM符号之间改变的移位值(K)来循环移位每个OFDM符号的NCBPS位。