CARRIER CONSTELLATION INFORMATION IN MULTI-CARRIER SYSTEMS
    3.
    发明公开
    CARRIER CONSTELLATION INFORMATION IN MULTI-CARRIER SYSTEMS 审中-公开
    TRERGERKONSTELLATIONSINATIONS形成在MEHRTRÄGERSYSTEMEN

    公开(公告)号:EP2922232A1

    公开(公告)日:2015-09-23

    申请号:EP15162596.9

    申请日:2000-01-28

    申请人: ALCATEL LUCENT

    IPC分类号: H04L5/00

    摘要: The present invention relates to a multi-carrier receiver for a multi-carrier system. The receiver comprises means for producing and transmitting bit number information related to the number of bits to be modulated on carriers.
    In accordance with an embodiment of the invention, the means are adapted to produce and transmit bit number information as parameter values for carrier subsets of contiguous carriers, and a single bit number parameter value is useable to determine the number of bits for carriers belonging to the same subset.
    The present invention also relates to a multi-carrier transmitter for a multi-carrier system.

    摘要翻译: 本发明涉及用于多载波系统的多载波接收机。 接收机包括用于产生和发送与要在载波上调制的比特数有关的比特数信息的装置。 根据本发明的实施例,该装置适于产生和发送比特数信息作为连续载波的载波子集的参数值,单个比特数参数值可用于确定属于该载波的载波的比特数 相同的子集。 本发明还涉及一种用于多载波系统的多载波发射机。

    Multicarrier receiver with radio frequency interference estimation capability
    5.
    发明公开
    Multicarrier receiver with radio frequency interference estimation capability 审中-公开
    MehrträgerempfängermitHochfrequenzstörungsschätzungsfähigkeit

    公开(公告)号:EP1237339A1

    公开(公告)日:2002-09-04

    申请号:EP01400548.2

    申请日:2001-03-01

    申请人: ALCATEL

    IPC分类号: H04L27/26

    摘要: A multi-carrier receiver selects carriers (A31,A32) whereto a small amount of power and data is allocated, for estimation of characteristics of a narrowband disturber (RFI-Signal-3) in the Radio Frequency Interference band (RFI-Band), a predetermined band for e.g. radio amateur transmission. These carriers (A31,A32) can be selected amongst all carriers located inside the Radio Frequency Interference band (RFI-Band) and at least two carriers (C1,C2) located outside the Radio Frequency Interference band (RFI-Band).

    摘要翻译: 多载波接收机选择分配少量功率和数据的载波(A31,A32),以估计射频干扰频带(RFI-Band)中的窄带干扰(RFI-Signal-3)的特性, 预定的频带例如 无线电业余传输。 可以在位于射频干扰频带(RFI-Band)内的所有载波和位于射频干扰频带(RFI-Band)外的至少两个载波(C1,C2)中选择这些载波(A31,A32)。

    Method to generate a pseudo-random sequence of multi-carrier data symbols, and related transmitter and receiver
    6.
    发明公开
    Method to generate a pseudo-random sequence of multi-carrier data symbols, and related transmitter and receiver 有权
    产生多载波数据码元的伪随机序列的方法,以及发射器和接收器,用于

    公开(公告)号:EP1150468A1

    公开(公告)日:2001-10-31

    申请号:EP00401154.0

    申请日:2000-04-26

    申请人: ALCATEL

    发明人: Antoine, Philippe

    IPC分类号: H04L27/26

    CPC分类号: H04L27/2613

    摘要: To generate a pseudo-random sequence (PRMS1) of multi-carrier data symbols (DMT0, DMT1, DMT2), a pseudo-random bit sequence (PRBS1) is produced by repetitively generating a pseudo-random sequence of L bits, L being a first integer value (L=4). To create a multi-carrier data symbol (DMT0, DMT1, DMT2) N bits are used, N being a second integer value (N=8). The pseudo-random bit sequence (PRBS1) is subdivided into strings of N' bits, N' being a third integer value larger than N (N'=9), and N bits out of each string of N' bits are used to generate a respective multi-carrier data symbol (DMT0, DMT1, DMT2). N'-N bits out of each string of N' bits are left unused.

    摘要翻译: 为了产生多载波数据码元(DMT0,DMT1,DMT2),一个伪随机比特序列(PRBS1)通过重复产生L比特的伪随机序列,L是一个所产生的伪随机序列(PRMS1) 第一整数值(L = 4)。 要创建一个多载波数据码元(DMT0,DMT1,DMT2)N位被用来,N是一个第二个整数的值(N = 8)。 伪随机比特序列(PRBS1)为细分为N“比特,N”是第三整数值大于N(N“= 9),和N比特n的每个串的”比特较大的串被用于产生 respectivement多载波数据码元(DMT0,DMT1,DMT2)。 N'-N比特N“比特的每个串的被闲置。

    Integrated modem circuit with software implemented PLL filter
    7.
    发明公开
    Integrated modem circuit with software implemented PLL filter 审中-公开
    Integrierte调制解调器软件实现了PLL滤波器

    公开(公告)号:EP1432193A1

    公开(公告)日:2004-06-23

    申请号:EP02293129.9

    申请日:2002-12-18

    申请人: ALCATEL

    IPC分类号: H04L27/26 H04L7/00

    摘要: An integrated modem circuits comprising processor-systems (1) and hardware (2,3) for exchanging signals with another modem circuit 1 Mb/s or more are provided with low cost, accurate, flexible filter software (11) for embodying a digital phase locked loop filter. Said hardware (2,3) comprises fast modules (22,32) for compensating for sample processing. The insight of hardware phase locked loops being expensive, not accurate, inflexible and of software phase locked loops being slow results in the basic idea of the phase locked loop calculations being done in software and the compensations being done in hardware. Sample software (14,15) processes samples (shifting - adding - deleting). Said hardware (2,3) comprises in the transmission path (2) mappers (21), rotors (22) and inverse Fourier transformators (23) and in the receiving path (3) Fourier transformators (33), rotors (32) and demappers (31). Control software (12,13) controls said rotors (22,32). In software in processor-system (1) there are initialization steps (101), reading steps (102), detection steps (104,105,106,111,112,115) executing steps (108,109), adaptation steps (110,116,117), and incrementation steps (114,118).

    摘要翻译: 包括用于与另一调制解调器电路Mb / s以上交换信号的处理器系统(1)和硬件(2,3)的集成调制解调器电路被提供有低成本,精确,灵活的滤波器软件(11),用于实现数字相位 锁定环路滤波器。 所述硬件(2,3)包括用于补偿样品处理的快速模块(22,32)。 硬件锁相环路的洞察是昂贵的,不准确的,不灵活的,并且软件锁相环路很慢,导致在软件中进行锁相环计算的基本思想,并且在硬件中完成补偿。 样品软件(14,15)处理样品(移动 - 添加 - 删除)。 所述硬件(2,3)包括传输路径(2)映射器(21),转子(22)和逆傅里叶变换器(23),并且在接收路径(3)中包含傅立叶变换器(33),转子(32)和 解雇者(31)。 控制软件(12,13)控制所述转子(22,32)。 在处理器系统(1)中的软件中,存在执行步骤(108,109),适应步骤(110,116,117)和递增步骤(114,118)的初始化步骤(101),读取步骤(102),检测步骤(104,105,106,111,112,115)。

    Symbol synchronisation in a multicarrier transmission system
    8.
    发明公开
    Symbol synchronisation in a multicarrier transmission system 审中-公开
    在einemMehrträgerübertragung系统中的符号符号

    公开(公告)号:EP1335553A1

    公开(公告)日:2003-08-13

    申请号:EP02290342.1

    申请日:2002-02-12

    申请人: ALCATEL

    IPC分类号: H04L27/26

    CPC分类号: H04L27/2662 H04L27/2675

    摘要: This application adresses the problem of synchronisation in multicarrier systems. Misalignment of symbol timing is determined by averaging the phase errors of at least two pilot tones, each weighted in accordance with the noise which affects the tone in question. When the noise which affects a pilot tone reaches a predetermined level, that pilot tone is reallocated to a different frequency, or its weight is reduced.

    摘要翻译: 该应用解决了多载波系统中的同步问题。 通过对至少两个导频音调的相位误差进行平均来确定符号定时的未对准,每个导频音调根据影响所述音调的噪声加权。 当影响导频音的噪声达到预定水平时,导频音被重新分配到不同的频率,或者其重量减小。

    Optimised bit loading for VDSL
    9.
    发明公开
    Optimised bit loading for VDSL 有权
    Optimierte DatenzuweisungfürVDSL

    公开(公告)号:EP1328099A1

    公开(公告)日:2003-07-16

    申请号:EP02360001.8

    申请日:2002-01-07

    申请人: ALCATEL

    IPC分类号: H04L27/26

    CPC分类号: H04L5/0046 H04L5/006

    摘要: A method for providing bit loading computation in a multi-carrier communication system, the method comprising measuring the signal to noise ratios (SNRs) for carriers and determining in dependence of the SNR a related number of bits to be loaded (=allocated) to the respective carrier, is characterised in that it comprises the steps of:

    a) providing a sliding window,
    b) moving the sliding window over the frequency spectrum of the carriers,
    c) for each position of the window determining bit allocation for the newly introduced carrier(s),
    d) in the event that a predetermined average power spectrum density threshold (TPSD) of the carriers over the window is exceeded, selecting at least one carrier within the window for power spectrum density reduction at the expense of at least one bit.

    摘要翻译: 一种用于在多载波通信系统中提供比特加载计算的方法,所述方法包括测量载波的信噪比(SNR),并根据SNR确定要加载(=分配)的相关位数 相应的载波的特征在于它包括以下步骤:a)提供滑动窗口,b)使滑动窗口在载波的频谱上移动,c)对于新引入的载波的窗口确定位分配的每个位置 d)在超过窗口上的载波的预定平均功率谱密度阈值(TPSD)超过的情况下,选择窗口内的至少一个载波以降低功率谱密度,其代价是至少一位 。

    Transmission of bit and gain allocation tables in multicarrier systems
    10.
    发明公开
    Transmission of bit and gain allocation tables in multicarrier systems 有权
    Mehrträgersystemen的Übertragungvon Bit- undVerstärkungszuweisungstabellen

    公开(公告)号:EP1120943A1

    公开(公告)日:2001-08-01

    申请号:EP00400231.7

    申请日:2000-01-28

    申请人: ALCATEL

    IPC分类号: H04L27/26 H04L5/14

    摘要: In a multi-carrier system, the carriers (f 0 ... f 511 , f 512 ... f 1023 , ..., f 3584 ... f 4095 ) are grouped in subsets (SUBSET1; SUBSET2; ...; SUBSET8). A constellation information transmitting arrangement (BiGi_TA), for instance located in the multi-carrier receiver (RX), produces for each carrier subset (SUBSET1; SUBSET2; ...; SUBSET8) a limited set of parameter values (B1, G1; B2, G2; ...; B8, G8) and transmits these sets of parameter values (B1, G1; B2, G2; ...; B8, G8) to a constellation information receiving arrangement (BiGi_RA), for instance located in the multi-carrier transmitter (TX). Through interpolation of the limited set of parameter values (B1, G1; B2, G2; ...; B8, G8) the latter constellation information receiving arrangement (BiGi_RA) determines the constellation where each carrier (f 0 ... f 511 , f 512 ... f 1023 , ..., f 3584 ... f 4095 ) of a carrier subset (SUBSET1; SUBSET2; ...; SUBSET8) will be modulated with.

    摘要翻译: 在多载波系统中,载波(f0 ... f511,f512 ... f1023,...,f3584 ... f4095)被分组在子集(SUBSET1; SUBSET2; ...; SUBSET8)中。 例如位于多载波接收机(RX)中的星座信息发送装置(BiGi_TA)为每个载波子集(SUBSET1; SUBSET2; ...; SUBSET8)产生有限的一组参数值(B1,G1; B2 ,G2; ...; B8,G8),并将这些参数值组(B1,G1; B2,G2; ...; B8,G8)发送到星座信息接收装置(BiGi_RA),例如位于 多载波发射机(TX)。 通过内插有限的参数值集合(B1,G1; B2,G2; ...; B8,G8),后者的星座信息接收装置(BiGi_RA)确定每个载波(f0 ... f511,f512)的星座。 载波子集(SUBSET1; SUBSET2; ...; SUBSET8)的f1023,... f3584 ... f4095)将被调制。