Turbo interleaver for high data rates
    1.
    发明授权
    Turbo interleaver for high data rates 失效
    Turbo交织器,用于高数据速率

    公开(公告)号:US08583983B2

    公开(公告)日:2013-11-12

    申请号:US12443975

    申请日:2007-11-01

    IPC分类号: H03M13/00

    摘要: Techniques for supporting high decoding throughput are described. A transmitter may encode a code block of data bits with a Turbo encoder. A receiver may perform decoding for the code block with a Turbo decoder having multiple soft-input soft-output (SISO) decoders. A contention-free Turbo interleaver may be used if the code block size is larger than a threshold size. A regular Turbo interleaver may be used if the code block size is equal to or smaller than the threshold size. The contention-free Turbo interleaver reorders the data bits in the code block such that information from the multiple SISO decoders, after interleaving or deinterleaving, can be written in parallel to multiple storage units in each write cycle without encountering memory access contention. The regular Turbo interleaver can reorder the data bits in the code block in any manner without regard to contention-free memory access.

    摘要翻译: 描述了用于支持高解码吞吐量的技术。 发射机可以使用Turbo编码器对数据位的码块进行编码。 接收机可以使用具有多个软输入软输出(SISO)解码器的Turbo解码器来对码块执行解码。 如果码块大小大于阈值大小,则可以使用无竞争的Turbo交织器。 如果码块大小等于或小于阈值大小,则可以使用常规Turbo交织器。 无竞争的Turbo交织器重新排序代码块中的数据位,使得来自多个SISO解码器的信息在交织或解交织之后可以在每个写周期中并行写入多个存储单元,而不会遇到存储器访问争用。 正常的Turbo交织器可以以任何方式重新排序代码块中的数据位,而不考虑无竞争的存储器访问。

    Turbo interleaver for high data rates
    2.
    发明申请
    Turbo interleaver for high data rates 失效
    Turbo交织器,用于高数据速率

    公开(公告)号:US20100077265A1

    公开(公告)日:2010-03-25

    申请号:US12443975

    申请日:2007-11-01

    IPC分类号: G06F11/00

    摘要: Techniques for supporting high decoding throughput are described. A transmitter may encode a code block of data bits with a Turbo encoder. A receiver may perform decoding for the code block with a Turbo decoder having multiple soft-input soft-output (SISO) decoders. A contention-free Turbo interleaver may be used if the code block size is larger than a threshold size. A regular Turbo interleaver may be used if the code block size is equal to or smaller than the threshold size. The contention-free Turbo interleaver reorders the data bits in the code block such that information from the multiple SISO decoders, after interleaving or deinterleaving, can be written in parallel to multiple storage units in each write cycle without encountering memory access contention. The regular Turbo interleaver can reorder the data bits in the code block in any manner without regard to contention-free memory access.

    摘要翻译: 描述了用于支持高解码吞吐量的技术。 发射机可以使用Turbo编码器对数据位的码块进行编码。 接收机可以使用具有多个软输入软输出(SISO)解码器的Turbo解码器来对码块执行解码。 如果码块大小大于阈值大小,则可以使用无竞争的Turbo交织器。 如果码块大小等于或小于阈值大小,则可以使用常规Turbo交织器。 无竞争的Turbo交织器重新排序代码块中的数据位,使得来自多个SISO解码器的信息在交织或解交织之后可以在每个写周期中并行写入多个存储单元,而不会遇到存储器访问争用。 正常的Turbo交织器可以以任何方式重新排序代码块中的数据位,而不考虑无竞争的存储器访问。

    System and method for single carrier optimization for evolved multimedia broadcast multicast service
    4.
    发明授权
    System and method for single carrier optimization for evolved multimedia broadcast multicast service 有权
    用于演进多媒体广播多播服务的单载波优化的系统和方法

    公开(公告)号:US09160592B2

    公开(公告)日:2015-10-13

    申请号:US13401540

    申请日:2012-02-21

    IPC分类号: H04H20/71 H04L27/26 H04L5/00

    摘要: Techniques are provided for single carrier optimization. For example, there is provided a method that involves, in a subframe of a radio spectrum, allocating a first set of resource elements (REs) for multimedia broadcast over a single frequency network (MBSFN) transmissions, each symbol corresponding to each RE of the first set having a first cyclic prefix (CP) type. The method may involve allocating a second set of REs for unicast transmissions, each symbol corresponding to each RE of second set having a second CP type. The method may involve determining whether the first CP type and the second CP type are the same. The method may involve, in response to the first CP type and the second CP type being the same, combining the MBSFN transmissions and the unicast transmissions in the subframe according to the allocated first and second sets of REs.

    摘要翻译: 为单载波优化提供了技术。 例如,提供了一种方法,其涉及在无线电频谱的子帧中,通过单个频率网络(MBSFN)传输分配用于多媒体广播的第一组资源元素(RE),每个符号对应于每个RE的每个RE 第一集合具有第一循环前缀(CP)类型。 该方法可以包括分配用于单播传输的第二组RE,每个符号对应于具有第二CP类型的第二组的每个RE。 该方法可以包括确定第一CP类型和第二CP类型是否相同。 该方法可以响应于第一CP类型和第二CP类型相同,根据所分配的第一和第二组RE来组合MBSFN传输和子帧中的单播传输。

    Bundled frequency division multiplexing structure in wireless communications
    5.
    发明授权
    Bundled frequency division multiplexing structure in wireless communications 有权
    无线通信中捆绑的频分复用结构

    公开(公告)号:US08855064B2

    公开(公告)日:2014-10-07

    申请号:US13004614

    申请日:2011-01-11

    IPC分类号: H04W4/00 H04W72/04 H04L5/00

    摘要: Methods and apparatuses are provided that facilitate allocating a portion of a resource block to a power-limited device for communicating therewith. The power-limited device may not be capable of transmitting over an entire resource block due to power limitations; thus, a portion of the resource block can be assigned thereto, allowing for allocating at least a different portion of the resource block to at least one different device to optimize communications over the resource block. In addition, the portion of the resource block can be allocated across one or more bundled time transmit intervals (TTI) to allow for effective communication of time-sensitive data, such as voice over internet protocol (VoIP).

    摘要翻译: 提供的方法和装置有助于将资源块的一部分分配给功率受限设备以与之通信。 由于功率限制,功率受限设备可能不能在整个资源块上传输; 因此,资源块的一部分可以被分配给它,允许将资源块的至少不同部分分配给至少一个不同的设备以优化资源块上的通信。 此外,可以通过一个或多个捆绑的时间发送间隔(TTI)来分配资源块的部分,以允许诸如网络协议(VoIP)之类的时间敏感数据的有效通信。

    Communication receiver with an adaptive equalizer
    7.
    发明授权
    Communication receiver with an adaptive equalizer 有权
    具有自适应均衡器的通信接收机

    公开(公告)号:US08422544B2

    公开(公告)日:2013-04-16

    申请号:US11856678

    申请日:2007-09-17

    IPC分类号: H03H7/30

    摘要: In a wireless communication system, a method for estimating a transmitted signal is disclosed. A wireless signal is received that includes a pilot channel and at least one other channel. A transmitted signal is estimated using an equalizer and the received wireless signal. The equalizer includes a filter with a plurality of taps that are adapted through use of an adaptive algorithm that uses an estimated pilot estimated from the received wireless signal. The pilot channel is transmitted in the wireless signal that included the at least one other channel. The estimated pilot is extracted and provided to the adaptive algorithm.

    摘要翻译: 在无线通信系统中,公开了一种用于估计发送信号的方法。 接收包括导频信道和至少一个其它信道的无线信号。 使用均衡器和接收到的无线信号来估计发送信号。 均衡器包括具有多个抽头的滤波器,其通过使用自适应算法来适配,所述自适应算法使用从所接收的无线信号估计的估计导频。 在包括至少一个其他信道的无线信号中发送导频信道。 估计的导频被提取并提供给自适应算法。

    Efficient zadoff-chu sequence generation
    8.
    发明授权
    Efficient zadoff-chu sequence generation 有权
    高效的zadoff-chu序列生成

    公开(公告)号:US08374072B2

    公开(公告)日:2013-02-12

    申请号:US12755998

    申请日:2010-04-07

    IPC分类号: H04J11/00 H04W4/00

    CPC分类号: H04J13/0059 H04J13/14

    摘要: Efficient apparatus and method for Zadoff-Chu (“Chu”) sequence generation avoids additional processing and hardware complexity of conventional quadratic generating formula followed by Discrete Fourier Transform (DFT) with a reference signal generator that produces both a Zadoff-Chu sequence and its DFT. In the wireless communication system (e.g., Long Term Evolution (LTE) system), Chu sequences are extensively used, especially in the uplink (UL). Because of the single carrier operating mode, transmitting a Chu sequence in principle involves a succession of generating that sequence, performing a DFT operation and then an IFFT operation. Assuming that the sequence length is N, the initial sequence generation requires 2N multiplications and the DFT requires more than N log 2(N) multiplications. Given the frequent processing of Chu sequences, this would represent a complexity burden. The invention makes it possible to perform the sequence generation and DFT steps without any multiplication operation, except for possibly calculating certain initial parameters.

    摘要翻译: 用于Zadoff-Chu(Chu)序列生成的高效装置和方法避免了常规二次生成公式的附加处理和硬件复杂性,随后是具有产生Zadoff-Chu序列及其DFT的参考信号发生器的离散傅里叶变换(DFT)。 在无线通信系统(例如,长期演进(Long Term Evolution,LTE)系统)中,尤其在上行链路(UL)中广泛使用了Chu序列。 由于单载波操作模式,原则上发送Chu序列涉及一系列生成该序列,执行DFT操作,然后进行IFFT操作。 假设序列长度为N,则初始序列生成需要2N次乘法,并且DFT需要多于N个log 2(N)乘法。 鉴于Chu序列的频繁处理,这将代表一个复杂的负担。 除了可能计算某些初始参数之外,本发明使得可以执行没有任何乘法运算的序列生成和DFT步骤。

    CARRIER AGGREGATION FOR EVOLVED MULTIMEDIA BROADCAST MULTICAST SERVICE ENHANCEMENT
    9.
    发明申请
    CARRIER AGGREGATION FOR EVOLVED MULTIMEDIA BROADCAST MULTICAST SERVICE ENHANCEMENT 有权
    促进多媒体广播组播服务增强的载体聚合

    公开(公告)号:US20120213130A1

    公开(公告)日:2012-08-23

    申请号:US13402845

    申请日:2012-02-22

    摘要: Carrier aggregation to enhance Evolved Multimedia Broadcast Multicast Service (eMBMS) includes transmitting unicast signaling for a unicast service on an anchor carrier to mobile entities, transmitting eMBMS signaling on a second carrier different from the anchor carrier to the mobile entities for use with the unicast signaling, and various techniques for practical application of carrier aggregation for eMBMS enhancement. In addition, allocating subframes used for MBMS on a Single Frequency Network (MBSFN) includes allocating at least a portion of one or more subframes otherwise reserved for unicast subframes on a mixed carrier to provide an increased allocation of subframes carrying MBSFN information, transmitting MBSFN signals on the increased allocation of subframes, and more detailed aspects.

    摘要翻译: 用于增强演进的多媒体广播多播服务(eMBMS)的载波聚合包括将锚定载波上的单播服务的单播信令发送到移动实体,在不同于该锚定载波的第二载波上将eMBMS信令发送到移动实体以与单播信令一起使用 ,以及用于eMBMS增强的载波聚合的实际应用的各种技术。 此外,在单频网络(MBSFN)上分配用于MBMS的子帧包括:在混合载波上分配另外保留用于单播子帧的一个或多个子帧的至少一部分,以提供携带MBSFN信息的子帧的增加分配,发送MBSFN信号 对子帧的分配增加,以及更详细的方面。