会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 5. 发明申请
    • APPARATUS FOR AND METHOD OF COORDINATING TRANSMISSION AND RECEPTION OPPORTUNITIES IN A COMMUNICATIONS DEVICE INCORPORATING MULTIPLE RADIOS
    • 在多用途无线电通信的通信设备中协调传输和接收机会的方法和方法
    • US20090180451A1
    • 2009-07-16
    • US12349758
    • 2009-01-07
    • Yaron AlpertJonathan SegevEhud Reshef
    • Yaron AlpertJonathan SegevEhud Reshef
    • H04W84/10
    • H04W72/1215H04M1/7253H04W88/06
    • A novel and useful apparatus for and method of coordinating the allocation of transmission and reception availability and/or unavailability periods for use in a communications device incorporating collocated multiple radios. The mechanism provide both centralized and distributed coordination to enable the coordination (e.g., to achieve coexistence) of multiple radio access communication devices (RACDs) collocated in a single device such as a mobile station. A distributed activity coordinator modifies the activity pattern of multiple RACDs. The activity pattern comprises a set of radio access specific modes of operation, (e.g., IEEE 802.16 Normal, Sleep, Scan or Idle modes, 3GPP GSM/EDGE operation mode (PTM, IDLE, Connected, DTM modes), etc.) and a compatible set of wake-up events, such as reception and transmission availability periods. To prevent interference and possible loss of data, a radio access is prevented from transmitting or receiving data packets while another radio access is transmitting or receiving. In the event two or more RATs desire to be active at the same time, the mechanism negotiates an availability pattern between the MS and a corresponding BS to achieve coordination between the RATs.
    • 一种用于协调用于并入多个无线电的通信设备中的发送和接收可用性和/或不可用时间段的分配的新颖有用的装置和方法。 该机制提供集中式和分布式协调,以实现并置在诸如移动站的单个设备中的多个无线电接入通信设备(RACD)的协调(例如,实现共存)。 分布式活动协调器修改多个RACD的活动模式。 活动模式包括一组无线电接入特定的操作模式(例如,IEEE 802.16标准,睡眠,扫描或空闲模式,3GPP GSM / EDGE操作模式(PTM,IDLE,连接,DTM模式)等)和 兼容的一组唤醒事件,如接收和传输可用性周期。 为了防止数据的干扰和可能的丢失,防止无线电接入在另一无线电接入正在发送或接收时发送或接收数据分组。 在两个或更多个RAT期望同时活动的情况下,机制协商MS与对应的BS之间的可用性模式以实现RAT之间的协调。
    • 8. 发明授权
    • Compensation of I/Q gain mismatch in a communications receiver
    • 通信接收机中I / Q增益不匹配的补偿
    • US06977977B1
    • 2005-12-20
    • US09792018
    • 2001-02-20
    • Andrew DubrovinEvgeny YakhnichEhud Reshef
    • Andrew DubrovinEvgeny YakhnichEhud Reshef
    • H03D1/04H03D1/06H03D3/00H03K5/01H03K6/04H04L1/00H04L25/02H04L25/08H04L27/38
    • H04L27/3863H03D3/008H03D3/009H04L1/0054H04L1/0059H04L25/0216H04L25/0224
    • A novel and useful apparatus for and method of I/Q gain mismatch compensation for use in a communications receiver. The invention is operative to calculate an estimate of the I/Q gain mismatch. Each input sample is subsequently multiplied by the inverse of the estimate to generate compensated samples. The training sequence portion of the uncompensated input samples is used to generate the I/Q gain mismatch estimate. In accordance with the present invention, the H matrix used in calculating the gain mismatch estimate is pre-calculated for several channel lengths and stored in memory. An estimate of the channel is generated which provides the channel length and the location in the input sample buffer of the first training sequence sample to be used in calculating the gain mismatch estimate. The channel length is used to determine the number of training sequence samples to be used and to select one of the previously calculated H matrices.
    • 一种用于通信接收机的I / Q增益失配补偿的新颖有用的装置和方法。 本发明可用于计算I / Q增益失配的估计。 随后将每个输入样本乘以估计的倒数,以产生补偿样本。 未补偿输入样本的训练序列部分用于产生I / Q增益失配估计。 根据本发明,用于计算增益失配估计的H矩阵被预先计算出几个信道长度并存储在存储器中。 产生通道的估计,其提供要用于计算增益失配估计的第一训练序列样本的输入采样缓冲器中的信道长度和位置。 通道长度用于确定要使用的训练序列样本的数量,并选择先前计算的H矩阵中的一个。
    • 9. 发明授权
    • Soft decision output generator
    • 软决策输出发生器
    • US06731700B1
    • 2004-05-04
    • US09754566
    • 2001-01-04
    • Evgeny YakhnichEhud Reshef
    • Evgeny YakhnichEhud Reshef
    • H04L2706
    • H04L1/0064H04L1/0054
    • An apparatus for and method of generating soft decision information from a sequence of hard symbol decisions output from a decoder in a concatenated communications receiver. Soft symbol decisions are computed given hard symbol decisions from the equalizer, channel estimation information (i.e. FIR filter taps used to estimate the channel), and the input samples received from the channel. The log likelihood ratio (LLR) for all symbol possibilities is calculated by computing the conditional probability of the input sample sequence given the hard symbol decision sequence. The noise variance is optionally used in computing the soft output values, thus improving the overall performance of the receiver. In one embodiment, symbol vectors are calculated beforehand and stored in a table. An error vector calculator functions to calculate an error vector that is applied to soft output calculation units. Each soft output calculation unit functions to generate a soft output value for a particular symbol candidate.
    • 一种用于从连续通信接收机中的解码器输出的硬符号决定序列生成软判决信息的装置和方法。 根据来自均衡器的信号估计信息(即用于估计信道的FIR滤波器抽头)和从信道接收到的输入样本,计算给出硬符号判定的软符号判定。 通过计算给定硬符号判定序列的输入采样序列的条件概率来计算所有符号可能性的对数似然比(LLR)。 噪声方差可选地用于计算软输出值,从而提高接收机的整体性能。 在一个实施例中,事先计算符号向量并存储在表中。 误差向量计算器用于计算应用于软输出计算单位的误差向量。 每个软输出计算单元用于为特定符号候选产生软输出值。