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Method and apparatus for multiple access between transceivers in wireless communication using OFDM spread spectrum

机译:使用OFDM扩频的无线通信中的收发器之间的多址接入的方法和装置

摘要

A method for allowing a number of wireless transceivers to exchange information (data, voice or video) with each other. A first frame of information is multiplexed over a number of wideband frequency bands at a first transceiver, and the information transmitted to a second transceiver. The information is received and processed at the second transceiver. The information is differentially encoded using phase shift keying. In addition, after a pre-selected time interval, the first transceiver may transmit again. During the preselected time interval, the second transceiver may exchange information with another transceiver in a time duplex fashion. The processing of the signal at the second transceiver may include estimating the phase differential of the transmitted signal and pre-distorting the transmitted signal. A transceiver includes an encoder for encoding information, a wideband frequency division multiplexer for multiplexing the information onto wideband frequency voice channels, and a local oscillator for upconverting the multiplexed information. The apparatus may include a processor for applying a Fourier transform to the multiplexed information to bring the information into the time domain for transmission.Use/advantage:Time and frequency multiplexing,Multiple access in wideband transmission
机译:一种允许多个无线收发器相互交换信息(数据,语音或视频)的方法。第一信息帧在第一收发器上在多个宽带频带上被多路复用,并且该信息被发送到第二收发器。该信息在第二收发器处被接收和处理。使用相移键控对信息进行差分编码。另外,在预选的时间间隔之后,第一收发器可以再次发送。在预选的时间间隔期间,第二收发器可以以时间双工的方式与另一收发器交换信息。在第二收发器处对信号的处理可以包括估计所发送的信号的相位差并且使所发送的信号预失真。收发器包括:用于对信息进行编码的编码器;用于将信息复用到宽带语音信道上的宽带频分复用器;以及用于对所复用的信息进行上变频的本地振荡器。该设备可以包括处理器,该处理器用于将傅立叶变换应用于复用的信息,以将该信息带入时域以进行传输。 使用/优点: 时间和频率复用,宽带传输中的多路访问

著录项

  • 公开/公告号EP0562868A3

    专利类型

  • 公开/公告日1994-07-06

    原文格式PDF

  • 申请/专利权人 WI-LAN INC;

    申请/专利号EP19930302325

  • 发明设计人 ZAGLOUL HATIM;FATTOUCHE MICHAEL;

    申请日1993-03-25

  • 分类号H04Q7/04;

  • 国家 EP

  • 入库时间 2022-08-22 04:39:28

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