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公开(公告)号:WO2003028399A1
公开(公告)日:2003-04-03
申请号:PCT/JP2002/009784
申请日:2002-09-24
IPC: H04Q7/38
CPC classification number: H04B1/7075 , H04B1/70735 , H04B1/70775 , H04B1/7083 , H04B1/7093 , H04B2201/70702
Abstract: A synchronization code identification and a synchronization timing detection are performed in two stages. In a first stage of processes ST1 to ST7, according to a rough correlation between a reception signal and a candidate synchronization code, the synchronization code or the synchronization timing are roughly decided or one of them is accurately calculated. In a second stage of processes ST8 to ST12, an accurate synchronization code identification and synchronization timing detection are performed.
Abstract translation: 同步码识别和同步定时检测分两个阶段进行。 在处理ST1至ST7的第一阶段,根据接收信号和候选同步码之间的粗略的相关性,粗略地确定同步码或同步定时,或者精确地计算其中之一。 在处理ST8至ST12的第二阶段中,执行精确的同步码识别和同步定时检测。
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公开(公告)号:WO2003017511A1
公开(公告)日:2003-02-27
申请号:PCT/JP2002/007958
申请日:2002-08-05
Applicant: 松下電器産業株式会社 , 林 真樹
Inventor: 林 真樹
IPC: H04B1/10
CPC classification number: H04B1/7105 , H04B1/1027 , H04L25/0202 , H04L25/03006
Abstract: Path selection units (105a to 105n) output to a JD demodulation unit (106) a channel estimation value obtained by cutting signals other than a valid path such as a noise from a delay profile and selecting only the valid path and output a valid path reception level to multipliers (108a to 108n). The JD demodulation unit (106) performs a joint detection calculation and multiplies the line calculation result with a reception signal output from a delay unit (103). A distribution unit (107) distributes soft decision data of each user for each user. Error correction/decoding units (109a to 109n) perform hard decision of the soft decision data so as to obtain demodulation data for each user.
Abstract translation: 路径选择单元(105a至105n)向JD解调单元(106)输出通过从延迟分布中除去诸如噪声之类的有效路径以外的信号而获得的信道估计值,并且仅选择有效路径并输出有效路径接收 级到乘法器(108a至108n)。 JD解调单元(106)执行联合检测计算,并将行计算结果与从延迟单元(103)输出的接收信号相乘。 分配单元(107)为每个用户分配每个用户的软判决数据。 错误校正/解码单元(109a〜109n)进行软判决数据的硬判定,得到每个用户的解调数据。
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公开(公告)号:WO2002095986A1
公开(公告)日:2002-11-28
申请号:PCT/JP2002/004903
申请日:2002-05-21
Applicant: 松下電器産業株式会社 , 須増 淳 , 三好 憲一 , 林 真樹 , 鈴木 秀俊
IPC: H04B7/26
CPC classification number: H04W80/00 , H04L1/0003 , H04L1/0009 , H04L1/16 , H04L1/1812 , H04L1/1883 , H04L69/16 , H04L69/165 , H04W52/04
Abstract: A control unit (115) calculates the timing of the actual time−out on the basis of time−out information and outputs an MCS control signal serving as a control signal for commanding a change of the modulation method to a layer−2 downlink processing unit (111) if the timing of the actual time−out comes soon. The layer−2 downlink processing unit (111) subtracts the number of levels of modulation from data stored in a memory on receiving the MCS control signal from the control unit (115) and modulates the resultant data. A layer−1 transmitting unit (112) subjects the output signal from the layer−2 downlink processing unit (111) to a radio processing and transmits the processed signal from an antenna by radio. In such a way, a time−out is prevented from occurring before a terminal of the transmission part receives an ACK signal even though a radio terminal has transmitted the ACK signal by radio. Degradation of the TCP through−put due to the reduction of the size of the data next transmitted at a time is prevented.
Abstract translation: 控制单元(115)基于超时信息计算实际超时的定时,并将作为用于指示调制方式的改变的控制信号的MCS控制信号输出到第二层下行链路处理单元 (111)如果实际超时的时间很快。 第二层下行链路处理单元(111)从控制单元(115)接收到MCS控制信号后,从存储在存储器中的数据中减去调制电平数,并调制所得到的数据。 层1发送单元(112)对来自第2层下行链路处理单元(111)的输出信号进行无线处理,并通过无线电从天线发送处理后的信号。 以这种方式,即使无线电终端已经通过无线电发送了ACK信号,在发送部分的终端接收到ACK信号之前也防止发生超时。 防止了由于随后一次发送的数据的尺寸的减小导致的TCP吞吐量的降低。
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