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    • 6. 发明公开
    • 일반화 2단 데이터 추정
    • 一般两阶段数据估计
    • KR1020090006880A
    • 2009-01-15
    • KR1020087031553
    • 2004-01-08
    • 인터디지탈 테크날러지 코포레이션
    • 판길중린황유진그리코도날드엠
    • H04B1/7103
    • H04B1/71052H04B1/71055H04B2201/70707H04L25/0206H04L25/0246
    • Symbols are to be recovered from signals received in a shared spectrum. Codes of the signals received in the shared spectrum are processed using a block Fourier transform (FT 34), producing a code block diagonal matrix. A channel response of the received signals is estimated. The channel response is extended and modified (36) to produce a block circulant matrix and a block FT (38) is taken, producing a channel response block diagonal matrix. The code block diagonal matrix is combined (40, 44, 46) with the channel response block diagonal matrix. The received signals are sampled and processed using the combined code block diagonal matrix and the channel response block diagonal matrix with a Cholesky algorithm. A block inverse FT (60) is performed on a result of the Cholesky algorithm to produce spread symbols. The spread symbols are despread to recover symbols of the received signals.
    • 符号将从在共享频谱中接收的信号中恢复。 使用块傅里叶变换(FT 34)处理在共享频谱中接收的信号的码,产生码块对角矩阵。 估计接收信号的信道响应。 信道响应被扩展和修改(36)以产生块循环矩阵,并且采用块FT(38),产生信道响应块对角矩阵。 码块对角矩阵与信道响应块对角矩阵组合(40,44,46)。 使用Cholesky算法使用组合码块对角矩阵和信道响应块对角矩阵对接收到的信号进行采样和处理。 对Cholesky算法的结果执行块反向FT(60)以产生扩展符号。 扩展符号被解扩以恢复接收信号的符号。
    • 8. 发明公开
    • 이동 통신 시스템의 직렬형 다중 간섭 잡음 제거 장치 및그 방법
    • 移动通信系统连续干扰消除的装置和方法
    • KR1020080052165A
    • 2008-06-11
    • KR1020070039747
    • 2007-04-24
    • 한국전자통신연구원삼성전자주식회사
    • 박남진김영일
    • H04B1/7103H04B1/10
    • H04B1/7107H04B1/711H04B2201/70701
    • An apparatus and a method for canceling successive multiple interferences in a mobile communication system are provided to enhance definiteness in estimating channels, performance of a CDMA type mobile communication system, and system capacity by accommodating more number of users. A method for canceling successive multiple interferences comprises the following steps. One diffuser of a transmitter diffuses a signal of a pilot channel by using the Walsh code 0(S410), and other diffuser diffuses (+1, -1) signals of an i-th user in a communication channel by using the Walsh code 1(S420). An adder adds the signal of the pilot channel and the user signal, and generates a transmission signal(S430). Another diffuser diffuses the generated transmission signal by using the PN(Pseudo-random Noise) code(S440). A pulse shaping filter performs a pulse shaping and filtering operation on the transmission signal(S450). A modulator performs a frequency modulation operation on the transmission signal, outputted by the pulse shaping filter, by using a carrier wave(S460).
    • 提供一种用于消除移动通信系统中的连续多个干扰的装置和方法,以通过容纳更多的用户来增强估计信道,CDMA型移动通信系统的性能和系统容量的确定性。 一种消除连续多重干扰的方法包括以下步骤。 发射机的一个漫射器通过使用沃尔什码1(Walsh code 1)中的沃尔什码0(S410)和第i个用户在通信信道中的其他扩散漫射(+1,-1)信号来扩散导频信道的信号 (S420)。 加法器将导频信道和用户信号的信号相加,并生成发送信号(S430)。 另一个扩散器通过使用PN(伪随机噪声)码来扩散生成的传输信号(S440)。 脉冲整形滤波器对发送信号执行脉冲整形和滤波操作(S450)。 调制器通过使用载波对由脉冲整形滤波器输出的发送信号执行频率调制操作(S460)。
    • 10. 发明公开
    • 코드 분할 다중 접속 통신시스템에서 다중 사용자 검출장치 및 방법
    • 用于检测CDMA通信系统中多路复用器的装置和方法
    • KR1020070006338A
    • 2007-01-11
    • KR1020050061591
    • 2005-07-08
    • 삼성전자주식회사
    • 카츠채찬병시바네산
    • H04B1/7103H04B1/7093
    • H04B1/71055H04B1/7093
    • A multi-user detector in a CDMA communication system and a method thereof are provided to offer a linear MMSE(Minimum Mean Square Error)-type multi-user receiver having improved bit error probability performance by maximizing an SNIR(Signal to Noise Interference Ratio). A base station first obtains the power spectrum density function of a multiple access interference(410). Then, the base station adds the spectrum density of an additive Gaussian white noise to the multiple access interference power spectrum density function(420). Finally, the base station multiplies an existing conventional matched filter function by the reciprocal number of the added value and configures a white matched filter, which executes pulse shaping for each user's Rx signal(430).
    • 提供CDMA通信系统中的多用户检测器及其方法,以通过使SNIR(信噪比干扰比)最大化来提供具有改进的比特错误概率性能的线性MMSE(最小均方误差)型多用户接收机, 。 基站首先获得多址干扰的功率谱密度函数(410)。 然后,基站将加性高斯白噪声的频谱密度加到多址干扰功率谱密度函数(420)。 最后,基站将现有的常规匹配滤波器函数乘以相加值的倒数,并配置对每个用户的Rx信号执行脉冲整形的白色匹配滤波器(430)。