公开(公告)号：US20050207367A1

公开(公告)日：2005-09-22

申请号：US11085590

申请日：2005-03-21

申请人： Eko Onggosanusi ,  Anand Dabak ,  Timothy Schmidl ,  Aris Papasakellariou ,  Yan Hui

发明人： Eko Onggosanusi ,  Anand Dabak ,  Timothy Schmidl ,  Aris Papasakellariou ,  Yan Hui

IPC分类号： H04J1/16 ,  H04J3/14 ,  H04L5/02 ,  H04L27/26

CPC分类号： H04L1/0003 ,  H04L1/0009 ,  H04L5/023 ,  H04L27/2608 ,  H04W24/10 ,  H04W72/1231

摘要： Method for computing and transmitting channel quality information in a multi-carrier communications system. A preferred embodiment comprises receiving a transmission from a transmitter, wherein the transmission occurs over a plurality of carriers, measuring a channel condition for each carrier in a plurality of carriers, computing a channel quality indicator based upon the measured channel condition, and providing the channel quality indicator to the transmitter. The channel quality indicator can be used at the transmitter to schedule transmissions to various users in the multi-carrier communications system to maximize utilization of the carriers as well as overall network performance.

摘要翻译： 用于在多载波通信系统中计算和发送信道质量信息的方法。 优选实施例包括从发射机接收传输，其中所述传输发生在多个载波上，测量多个载波中的每个载波的信道状况，基于测量的信道状况计算信道质量指示符，以及提供信道 质量指示器到发射机。 可以在发射机处使用信道质量指示符来调度对多载波通信系统中的各种用户的传输，以最大限度地利用载波以及整体网络性能。

公开(公告)号：US06760438B1

公开(公告)日：2004-07-06

申请号：US09345419

申请日：1999-07-01

申请人： Yan Hui ,  Karl D. Mann

发明人： Yan Hui ,  Karl D. Mann

IPC分类号： H04L900

CPC分类号： H04L1/006 ,  H04L1/0041 ,  H04L1/0054 ,  H04L1/0065 ,  H04L1/0071 ,  H04L9/065 ,  H04L2001/0098 ,  H04L2209/046 ,  H04L2209/34

摘要： A system and method for Viterbi decoding on encrypted data is disclosed. At the receiver, maximum likelihood decoding is performed based on received input in the encryption domain. When selecting a path from one stage of a Viterbi decoding trellis to the next, a local metric may be associated with each of the possible paths based on Euclidean distance between a received symbol and a path state. The path state is determined by encrypting the binary path state. An overall metric is associated with each state equivalent to a sum of local path metrics along a survivor path of selected paths. At the end of the Viterbi decoding trellis, a decoded and decrypted bit sequence is obtained by tracing back in a conventional manner.

摘要翻译： 公开了一种用于对加密数据进行维特比解码的系统和方法。 在接收机处，基于加密域中的接收输入执行最大似然解码。 当从维特比解码网格的一个级到下一级的路径选择时，本地度量可以基于接收到的符号和路径状态之间的欧氏距离与每个可能的路径相关联。 通过加密二进制路径状态来确定路径状态。 总体度量与相当于所选路径的幸存路径的本地路径量度的总和的每个状态相关联。 在维特比解码网格结束时，通过以常规方式追溯来获得解码和解密的比特序列。