-
1.发明公开Distribution of phase of references in a multicarrier system 失效在einemMehrträgers系统中的Verteilung von Phasenreferenzen
公开(公告)号：EP0752779A2
公开(公告)日：1997-01-08
申请号：EP96304767.5
申请日：1996-06-28
发明人： Malkamäki, Esa , Junell, Jari
IPC分类号： H04L27/26
CPC分类号： H04L27/2075 , H04L5/0007 , H04L5/0048
摘要： The invention relates to the organization of phase references in a data transfer system based upon the multiplexing of orthogonal frequency components, when transmissions in the said system are composed of relatively short symbol sequences. In accordance with the invention, in the first symbol (OS1) of the sequence differential phase-shift keying between elementary signals is carried out, based upon a phase reference (Ref) transmitted in one or several subfrequency bands (fc) and upon a phase shift chain propagated one subfrequency thereof at a time. In each subfrequency band in the subsequent symbols of the sequence phase-shift modulation refers to the elementary signal of the preceding symbol of the same subfrequency band. The invention may be applied with benefit to digital cellular network systems which employ the OFDM method.
摘要翻译： 本发明涉及当在所述系统中的传输由相对短的符号序列组成时，基于正交频率分量的复用的数据传输系统中的相位参考的组织。 根据本发明，在基本信号之间的序列差分相移键控的第一符号（OS1）中，基于在一个或多个子频带（fc）中发射的相位参考（Ref）和相位 移位链一次传播一个子频率。 在序列的后续符号中的每个子频带中，相移调制是指相同子频带的先前符号的基本信号。 本发明可以应用于采用OFDM方法的数字蜂窝网络系统。
-
公开(公告)号：EP0752779A3
公开(公告)日：1999-04-28
申请号：EP96304767.5
申请日：1996-06-28
发明人： Malkamäki, Esa , Junell, Jari
IPC分类号： H04L27/26
CPC分类号： H04L27/2075 , H04L5/0007 , H04L5/0048
摘要： The invention relates to the organization of phase references in a data transfer system based upon the multiplexing of orthogonal frequency components, when transmissions in the said system are composed of relatively short symbol sequences. In accordance with the invention, in the first symbol (OS1) of the sequence differential phase-shift keying between elementary signals is carried out, based upon a phase reference (Ref) transmitted in one or several subfrequency bands (fc) and upon a phase shift chain propagated one subfrequency thereof at a time. In each subfrequency band in the subsequent symbols of the sequence phase-shift modulation refers to the elementary signal of the preceding symbol of the same subfrequency band. The invention may be applied with benefit to digital cellular network systems which employ the OFDM method.
-
3.发明公开A wide-band application based upon a narrow-band TMDA system 失效Auf einer Schmalband-TDMA-Anordnung basierende Breitbandvorrichtung
公开(公告)号：EP0752765A2
公开(公告)日：1997-01-08
申请号：EP96304769.1
申请日：1996-06-28
IPC分类号： H04B7/26
CPC分类号： H04J4/00 , H04B7/2646 , H04L27/2601
摘要： The invention relates to the formation of a wide-band data transfer link (WB) as an extension to a data transfer system, which comprises narrow frequency bands (f2) for the organization of narrow-band data transfer calls using one frequency band. In accordance with the invention the data stream (S) which is to be trans-mitted is divided into substreams (S5 - S9), each of which modulates a different frequency band (f5 - f9). The signals thus obtained are combined (C) for trans-mission. The received signal is divided into frequency bands, which are de-modulated separately, and from the data substreams thus obtained the original data stream is reconstructed. The wide-band communication in accordance with the invention (WB) may further be divided among many users on the principle of time or frequency-division multiple access.
摘要翻译： 本发明涉及形成作为数据传输系统的扩展的宽带数据传输链路（WB），其包括用于组织使用一个频带的窄带数据传送呼叫的窄频带（f2）。 根据本发明，要发送的数据流（S）被划分为子流（S5-S9），每个子模块调制不同的频带（f5-f9）。 这样获得的信号被组合（C）用于传播。 接收到的信号被分成频带，分别被解调，并且从这样获得的数据子流中重构原始数据流。 根据本发明（WB）的宽带通信可以进一步根据时间或频分多址原理在许多用户之间划分。
-
4.发明授权Digital mobile radio communication system with repeat request of a burst of speech or data following error recognition 失效与语音或数据块的重传请求，根据错误检测的移动数字无线电通信系统
公开(公告)号：EP0595637B1
公开(公告)日：1999-06-23
申请号：EP93308630.8
申请日：1993-10-28
发明人： Malkamäki, Esa , Ranta, Pekka
IPC分类号： H04L1/18
CPC分类号： H04L1/1887 , H04L1/0061 , H04L1/0065 , H04L1/007 , H04L1/0071 , H04L1/1664 , H04L1/1812
-
公开(公告)号：EP0752765A3
公开(公告)日：2001-01-03
申请号：EP96304769.1
申请日：1996-06-28
CPC分类号： H04J4/00 , H04B7/2646 , H04L27/2601
摘要： The invention relates to the formation of a wide-band data transfer link (WB) as an extension to a data transfer system, which comprises narrow frequency bands (f2) for the organization of narrow-band data transfer calls using one frequency band. In accordance with the invention the data stream (S) which is to be trans-mitted is divided into substreams (S5 - S9), each of which modulates a different frequency band (f5 - f9). The signals thus obtained are combined (C) for trans-mission. The received signal is divided into frequency bands, which are de-modulated separately, and from the data substreams thus obtained the original data stream is reconstructed. The wide-band communication in accordance with the invention (WB) may further be divided among many users on the principle of time or frequency-division multiple access.
-
公开(公告)号：EP0633671A2
公开(公告)日：1995-01-11
申请号：EP94303777.0
申请日：1994-05-25
发明人： Jokinen, Harri , Malkamäki, Esa
CPC分类号： H04L1/16 , H04L1/1692 , H04L1/1854 , H04L5/06 , H04L5/26 , H04L25/0224 , H04L2001/125 , H04W72/044
摘要： The invention relates to a communication method for a digital cellular mobile telephone system and a digital cellular mobile telephone system comprising several base stations and mobiles utilizing time division multiple access. In the system communication is carried out on a predetermined frequency band in a predetermined number of time slots having a predetermined length. In the communication between the mobiles and the base station within the TDMA time slot with the predetermined length, the transmissions to communicate information comprising a few bits or several bits from the mobiles communicating with the same base station at least within the same time slot are mutually substantially orthogonal. Preferably, in order to communicate information, preferably information of the on-off type, such as acknowledgments and channel allocation requests, the mobiles communicating with the same base station use substantially orthogonal transmissions at least to the same base station in the same time slot. Preferably each mobile transmits within the TDMA burst of said TDMA time slot of the predetermined length as a part of the burst a predetermined bit sequence corresponding to the transmitted information bit combination, whereby the predetermined frequency band is unchanged. The bit sequences transmitted by different mobiles to the same base station are mutually substantially orthogonal. By using such substantially orthogonal transmissions it is possible to avoid collisions between the communications of information comprising a few or several bits, typically 1 to 10 bits, such as acknowledgments and channel allocation requests, which typically occur in a time division multiple access system.
摘要翻译： 数字蜂窝移动电话系统的通信方法和数字蜂窝移动电话系统本发明涉及一种用于数字蜂窝移动电话系统的通信方法和一种数字蜂窝移动电话系统，该数字蜂窝移动电话系统包括利用时分多址的几个基站和移动台。 在该系统中，在具有预定长度的预定数量的时隙中的预定频带上执行通信。 在具有预定长度的TDMA时隙内的移动台和基站之间的通信中，至少在相同的时隙内传送包括来自与同一基站通信的移动台的几个比特或几个比特的信息的传输是互相 基本正交。 优选地，为了传送信息，优选通知类型的信息，例如确认和信道分配请求，与相同基站通信的移动台至少在同一时隙中使用基本上正交的传输。 优选地，每个移动站在具有预定长度的所述TDMA时隙的TDMA突发内发送与所发送的信息比特组合相对应的预定比特序列作为突发的一部分，由此预定频带不变。 不同移动台向同一基站发送的比特序列基本上是正交的。 通过使用这种基本上正交的传输，有可能避免包括典型地1到10比特的几个或几个比特的信息的通信（诸如通常在时分多址系统中发生的确认和信道分配请求）之间的冲突。
-
7.发明公开Digital mobile radio communication system with repeat request of a burst of speech or data following error recognition 失效移动数字无线电通信系统中具有根据语音或数据块的重传请求的错误检测。
公开(公告)号：EP0595637A1
公开(公告)日：1994-05-04
申请号：EP93308630.8
申请日：1993-10-28
发明人： Malkamäki, Esa , Ranta, Pekka
IPC分类号： H04L1/18
CPC分类号： H04L1/1887 , H04L1/0061 , H04L1/0065 , H04L1/007 , H04L1/0071 , H04L1/1664 , H04L1/1812
摘要： A digital mobile radio communication system, in which a burst of speech or data, is transmitted, and an error check is carried out for each burst and when the burst is incorrect, information about the incorrect burst is transmitted to the transmitter. Hereby, the transmitter retransmits the same burst or a burst containing information related thereto, preferably prior to producing a subsequent burst. With the procedure the delay in transmission can be made shorter.
摘要翻译： 一种数字移动无线电通信系统，其中话音或数据的脉冲串，是反式mitted，和错误检查被执行为每个脉冲串，并且当突发不正确，关于不正确的脉冲串信息是反式mitted到发射机。 由此，发送器重发该相同的突发或与其相关的脉冲串包含的信息，优选之前产生的后续脉冲串。 随着过程中传输的延迟可被做得更短。
-
公开(公告)号：EP0633671A3
公开(公告)日：1995-05-24
申请号：EP94303777.0
申请日：1994-05-25
发明人： Jokinen, Harri , Malkamäki, Esa
CPC分类号： H04L1/16 , H04L1/1692 , H04L1/1854 , H04L5/06 , H04L5/26 , H04L25/0224 , H04L2001/125 , H04W72/044
摘要： The invention relates to a communication method for a digital cellular mobile telephone system and a digital cellular mobile telephone system comprising several base stations and mobiles utilizing time division multiple access. In the system communication is carried out on a predetermined frequency band in a predetermined number of time slots having a predetermined length. In the communication between the mobiles and the base station within the TDMA time slot with the predetermined length, the transmissions to communicate information comprising a few bits or several bits from the mobiles communicating with the same base station at least within the same time slot are mutually substantially orthogonal. Preferably, in order to communicate information, preferably information of the on-off type, such as acknowledgments and channel allocation requests, the mobiles communicating with the same base station use substantially orthogonal transmissions at least to the same base station in the same time slot. Preferably each mobile transmits within the TDMA burst of said TDMA time slot of the predetermined length as a part of the burst a predetermined bit sequence corresponding to the transmitted information bit combination, whereby the predetermined frequency band is unchanged. The bit sequences transmitted by different mobiles to the same base station are mutually substantially orthogonal. By using such substantially orthogonal transmissions it is possible to avoid collisions between the communications of information comprising a few or several bits, typically 1 to 10 bits, such as acknowledgments and channel allocation requests, which typically occur in a time division multiple access system.
-
-
-
-
-
-
-
搜索结果
8 条记录 (耗时 0.013 秒)
