公开(公告)号：US20040137850A1

公开(公告)日：2004-07-15

申请号：US10718423

申请日：2003-11-20

Applicant: NORTEL NETWORKS LIMITED

Inventor： Thierry Lucidarme ,  Nidham Ben Rached

IPC: H04B017/00

CPC classification number: H04W74/004 ,  H04L25/0202 ,  H04W74/0833

Abstract: The method seeks a high-performance detection of a signal burst transmitted on the initiative of a sender on a radio channel listened to by a receiver system. The transmitted burst represents a predetermined digital sequence, serving for example to request access to a radio system or to ensure the synchronization of a radio interface. Channel parameters representing a statistical behavior of the radio channel are estimated and a detection magnitude is evaluated on the basis of the estimated channel parameters and of a correlation between a signal received at the receiver system and the predetermined digital sequence. The estimated channel parameters comprise moments of order greater than 2 of the gain on the radio channel.

Abstract translation: 该方法寻求在由接收机系统收听的无线电信道上由发送者主动发送的信号突发的高性能检测。 发送的突发表示预定的数字序列，例如用于请求对无线电系统的访问或确保无线电接口的同步。 估计表示无线电信道的统计行为的信道参数，并且基于所估计的信道参数以及在接收机系统接收的信号与预定的数字序列之间的相关性来评估检测幅度。 估计的信道参数包括无线电信道上的增益大于2的阶数。

公开(公告)号：US20040014444A1

公开(公告)日：2004-01-22

申请号：US10449983

申请日：2003-05-30

Applicant: Nortel Networks Limited

Inventor： Nidham Ben Rached ,  Stephane Cayla

IPC: H04B017/02

CPC classification number: H04L1/0009

Abstract: Radio links support signals, representing data blocks composed of symbols, transmitted between base stations and mobile stations by applying a transmission errors protection scheme selected from several specified protection schemes. Some at least of said stations communicate to a control unit measurement values relating to errors observed in the reception of symbols transmitted, and the control unit consults at least one lookup table to adaptively select the protection scheme applied to each radio link as a function of the measurement values communicated in relation to said link. For at least one of the protection schemes, statistical parameters relating to errors observed in the reception of blocks transmitted by applying said protection scheme are estimated. The estimated statistical parameters are processed so as to update the lookup table.

Abstract translation: 无线电链路通过应用从几个指定的保护方案中选择的传输错误保护方案来支持在基站和移动台之间传输的表示由符号组成的数据块的信号。 一些至少所述站与控制单元通信与发送的符号的接收中观察到的误差有关的测量值，并且控制单元参考至少一个查找表来自适应地选择应用于每个无线电链路的保护方案作为 与所述链接相关的测量值。 对于至少一个保护方案，估计与通过应用所述保护方案发送的块的接收中观察到的错误相关的统计参数。 处理估计的统计参数以便更新查找表。

公开(公告)号：US20040179578A1

公开(公告)日：2004-09-16

申请号：US10774711

申请日：2004-02-09

Applicant: NORTEL NETWORKS LIMITED

Inventor： Nidham Ben Rached ,  Thierry Lucidarme

IPC: H04B001/69

CPC classification number: H04B1/7117 ,  H04B1/712 ,  H04B2201/70701 ,  H04B2201/7071

Abstract: In a spread spectrum digital radiocommunication receiver, a first estimate of a symbol transmitted by a sender is calculated by applying to a radio signal received a processing taking into account a number N of propagation paths from the sender, a parameter of reliability of the first estimate is evaluated, and when the reliability parameter evaluated does not satisfy a confidence criterion, a second estimate of the symbol is calculated by taking into account at least one (Nnull1)-th propagation path from the sender in the processing applied to the radio signal received.

Abstract translation: 在扩展频谱数字无线电通信接收机中，通过应用接收的无线电信号来计算发送方发送的符号的第一估计，该处理考虑到来自发送者的传播路径数量N，第一估计的可靠性参数 并且当所评估的可靠性参数不满足置信标准时，通过考虑在应用于无线电的处理中的来自发送者的至少一个第（N + 1）个传播路径来计算符号的第二估计 收到信号。

公开(公告)号：US20040266472A1

公开(公告)日：2004-12-30

申请号：US10859663

申请日：2004-06-03

Applicant: NORTEL NETWORKS LIMITED

Inventor： Nidham Ben Rached ,  Thierry Lucidarme

IPC: H04B007/00

CPC classification number: H04W52/40

Abstract: The radio network controller estimates respective attenuation ratios of radio signals received by a terminal from transmitters of an active set. It commands at least some of the transmitters of the active set to transmit to the terminal with respective powers such that the difference pi-pj between the respective transmission powers pi and pj of two transmitters i and j is substantially proportional to 1 1 L j - 1 L i , where Li and Lj designate the attenuation ratios estimated for the transmitters i and j, respectively.

Abstract translation: 无线电网络控制器估计终端从活动组的发射机接收的无线电信号的各个衰减比。 它命令有源集合的至少一些发射机以相应的功率发射到终端，使得两个发射机i和j的各个发射功率pi和pj之间的差值pi-pj基本上与 1