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    • 8. 发明公开
    • METHOD AND DEVICE FOR SEPARATING AND PRESUMING NOISE CONTAINED IN SPREAD SPECTRUM SIGNAL
    • 方法和装置分离和检测频谱扩展所载NOISE
    • EP0798871A1
    • 1997-10-01
    • EP96935340.8
    • 1996-10-16
    • TOYO COMMUNICATION EQUIPMENT CO. LTD.Kuroyanagi, NoriyoshiSuehiro, Naoki
    • KUROYANAGI, NoriyoshiSUEHIRO, NaokiNAITOH, Toshikatsu, Toyo Commun. Equip. Co., Ltd.
    • H04B1/707
    • H04B1/7102
    • When a spread spectrum signal and various kinds of noise arrive at a receiver in a mixed state, the SN ratio of the received and demodulated signal and the frequency band utilization efficiency of the SS system are improved by separating the noise and discriminatingly detecting the frequency components of the noise. Specifically, the received frame signal r(t) containing noise is subjected to reverse spectrum spreading by using the same spread code sequence m(t) of a desired station, DC components are removed from the reverse-spread output u(t), a respread product output is produced by again multiplying the output u(t) by the spread code sequence m(t), N analysis frequency components Wi which are i times the frame rate which is the DFT conversion analysis result of the product output, the noise waveform components contained in the received signal are presumably detected by solving simultaneous linear equations with N unknowns constituted by using the set of Wi and noise frequency components Xj which are obtained by performing DFT conversion analysis only on the noise. The unknowns are the set of Xj.
    • 当扩展频谱信号和各种噪声中的在混合状态的到达接收机,接收到的和解调的信号的SN比和SS系统的频带利用效率是通过分离噪声和中区别检测的频率分量提高 的噪音。 具体而言,接收到的帧信号r(t)包含噪声进行反频谱利用所需台的同一个扩展码序列m(t)的扩展,DC分量被从逆扩展输出u(t)的移除,一个 分别读产物输出由再乘以扩展码序列m(T),N分析频率分量的Wi的输出u(t)的哪一个是:i次的帧率产生的所有这是产品输出,噪声的DFT转换分析结果 包含在接收信号波形分量推测是通过解决与通过使用该组的无线的和噪声的频率分量XJ其通过只对噪声进行DFT变换分析得出构成N个未知数的联立一次方程式检测。 未知数是集合X j的。
    • 9. 发明公开
    • ROTATE SHIFT CODE DIVISION MULTIPLEX COMMUNICATION SYSTEM
    • KODE-MULTIPLEX-NACHRICHTENÜBERTRAGUNGSSYSTEMMIT VERSCHIEBUNGSROTATION
    • EP1237313A1
    • 2002-09-04
    • EP01965564.6
    • 2001-09-10
    • TOYO COMMUNICATION EQUIPMENT CO. LTD.Kuroyanagi, NoriyoshiSuehiro, Naoki
    • KUROYANAGI, NoriyoshiSUEHIRO, NaokiTAKAHASHI, Masakazu, Toyo Communication Equip Co L
    • H04J13/04H04B1/707
    • H04J13/105H04B2201/70701H04J13/0022H04L7/041
    • A system using a transmitter which comprises means of generating 4 extended sequences E A 0 , E A 1 , E B 0 and E B 1 using a set (A 0 ,A 1 ) of auto-complementary sequences with length L chips consisting of complete complementary sequences and another similar set (B 0 ,B 1 ), and means of generating a transmitting frame s P obtained by multiplying a cascaded sequence Ê A made of extended sequences E A 0 and E A 1 by a pilot information p̂ , generating a transmitting frame s D obtained by multiplying a cascaded sequence Ê B made of extended sequences E B 0 and E B 1 by data b, synchronously adding both the transmitting frames to produce a symbol frame, and transmitting a carrier wave modulated thereby, and a receiver which comprises means of applying a front portion r 0 of the synchronously received baseband frame demodulated by above described carrier wave to matched filters M ( A 0 ) and M ( B 0 ), and applying a rear portion r 1 of the synchronously received frame to matched filters M ( A 1 ) and M ( B 1 ), and means of generating a pilot-response-matrix { p } and a received data-response-matrix Φ, both made of the outputs of M ( A 0 ) and M ( A 1 ), and of the outputs of M ( B 0 ) and M ( B 1 ) respectively, and generating an estimate of transmitted data.
    • 一种使用发射机的系统,其包括使用具有由完全互补序列组成的长度为L个码片的自动互补序列的集合(A0,A1)和另一相似集合(B0,B1)生成4个扩展序列EA0,EA1,EB0和EB1的装置 ),以及通过将由扩展序列EA0和EA1构成的级联序列ΔA乘以导频信息p / 而生成发送帧sP的装置,生成通过将由扩展序列构成的级联序列ÊB相乘而获得的发送帧sD EB0和EB1,同步地将发送帧同时加上以产生符号帧,并发送由其调制的载波;以及接收机,包括应用由上述载波解调的同步接收的基带帧的前部r0的装置 波到匹配滤波器M(A0)和M(B0),并将同步接收的帧的后部r1应用于匹配滤波器M(A1)和M(B1),以及g 提供了由M(A0)和M(A1)的输出和M(B0)和M(B1)的输出分别构成的导频响应矩阵äpü和接收的数据 - 响应矩阵PHI, 并产生传输数据的估计。