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1.发明授权Variable bandwidth OFDM receiver and methods for receiving OFDM signals of different bandwidths 有权可变带宽OFDM接收机和接收不同带宽的OFDM信号的方法公开(公告)号：US08730894B2
公开(公告)日：2014-05-20
申请号：US13267134
申请日：2011-10-06
CPC分类号： H04W28/04 , H04B7/0857 , H04B7/0874 , H04L5/0023 , H04L27/2608 , H04L27/2647 , H04W24/00
摘要： A variable bandwidth OFDM receiver and methods for receiving OFDM signals of different bandwidths are generally disclosed herein. The variable bandwidth OFDM receiver may be configured to receive signals over wider bandwidths by processing a resource block of subcarriers comprising a greater number of subcarriers, and receive signals over narrower bandwidths by processing a resource block of subcarriers comprising a lesser number of subcarriers. The resource blocks have a number of OFDM symbols in a time dimension to define a time slot, and each wherein the resource block comprises a minimum number of subcarriers for a narrowest bandwidth for a predetermined minimum bandwidth reception and a predetermined maximum number of subcarriers for a maximum bandwidth reception. In some embodiments, the variable bandwidth receiver may operate in accordance with an 3GPP LTE E-UTRAN standard.
摘要翻译： 本文一般公开了一种可变带宽OFDM接收机和用于接收不同带宽的OFDM信号的方法。 可变带宽OFDM接收机可以被配置为通过处理包括更多数量的子载波的子载波的资源块，并且通过处理包括较少数量子载波的子载波的资源块，通过较窄带宽接收信号来在较宽带宽上接收信号。 资源块在时间维度上具有多个OFDM符号以定义时隙，并且每个资源块包括用于预定最小带宽接收的最窄带宽的最小数量的子载波和用于一个预定最小带宽接收的预定最大数量的子载波 最大带宽接收。 在一些实施例中，可变带宽接收机可以根据3GPP LTE E-UTRAN标准进行操作。
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2.发明授权公开(公告)号：US07649833B2
公开(公告)日：2010-01-19
申请号：US10749903
申请日：2003-12-29
IPC分类号： H04J11/00
CPC分类号： H04W28/04 , H04B7/0857 , H04B7/0874 , H04L5/0023 , H04L27/2608 , H04L27/2647 , H04W24/00
摘要： A reconfigurable multichannel receiver may selectively operate in increased throughput modes and/or increased range modes. In some embodiments, the receiver may select two or more antennas from a plurality of spatially diverse antennas to receive more than one subchannel of a wideband orthogonal frequency division multiplexed (OFDM) channel. Maximum-ratio combining may be performed on corresponding symbol-modulated subcarriers from the two or more antennas, and a single OFDM symbol may be generated from contributions from the subchannels received by the two or more antennas. In other embodiments, more than one subchannel of a wideband OFDM channel may be received through a single antenna selected from a plurality of spatially diverse antennas. In other embodiments, a single subchannel may be received by a plurality of spatially diverse antennas and maximum-ratio combining may be performed on corresponding symbol-modulated subcarriers received by the antennas.
摘要翻译： 可重新配置的多通道接收器可以选择性地以增加的吞吐量模式和/或增加的范围模式操作。 在一些实施例中，接收机可以从多个空间多样的天线中选择两个或更多个天线，以接收宽带正交频分复用（OFDM）信道的多于一个子信道。 可以对来自两个或更多个天线的相应的符号调制副载波执行最大比组合，并且可以从由两个或更多个天线接收的子信道的贡献生成单个OFDM符号。 在其他实施例中，可以通过从多个空间多样的天线中选择的单个天线来接收多于一个的宽带OFDM信道的子信道。 在其他实施例中，单个子信道可以由多个空间上不同的天线接收，并且可以对由天线接收的对应的符号调制子载波执行最大比合并。
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3.发明授权OFDM receiver and methods for operating in high-throughput and increased range modes 有权OFDM接收机和用于在高吞吐量和增加的范围模式下操作的方法公开(公告)号：US08045449B2
公开(公告)日：2011-10-25
申请号：US12611289
申请日：2009-11-03
IPC分类号： H04J11/00
CPC分类号： H04W28/04 , H04B7/0857 , H04B7/0874 , H04L5/0023 , H04L27/2608 , H04L27/2647 , H04W24/00
摘要： An OFDM receiver operates in a high-throughput mode or an increased-range mode. The receiver includes FFT circuitry to generate frequency domain symbol-modulated subcarriers for a set of OFDM subcarriers. During the increased-range mode, data is received on a single subchannel and the FFT circuitry generates frequency domain symbol-modulated subcarriers for a set of OFDM subcarriers associated with the single subchannel. During the high-throughput mode, data is received on each subchannel of a plurality of subchannels and the FFT circuitry generates frequency domain symbol-modulated subcarriers for a different one of the subchannels. The OFDM receiver may operate in accordance with one of the IEEE 802.11 standards.
摘要翻译： OFDM接收机在高吞吐量模式或增加范围模式下工作。 接收机包括用于为一组OFDM子载波生成频域符号调制副载波的FFT电路。 在增加范围模式期间，在单个子信道上接收数据，并且FFT电路针对与单个子信道相关联的一组OFDM子载波生成频域符号调制副载波。 在高吞吐量模式期间，在多个子信道的每个子信道上接收数据，并且FFT电路为不同的一个子信道生成频域符号调制子载波。 OFDM接收机可以根据IEEE 802.11标准之一来操作。
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