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    • 2. 发明授权
    • Method and apparatus for improving transmission of data in a wireless
network
    • 一种改善无线网络中数据传输的方法和装置
    • US6038430A
    • 2000-03-14
    • US987982
    • 1997-12-10
    • Larry Steve ThomsonCarl AlelyunasBert Buxton
    • Larry Steve ThomsonCarl AlelyunasBert Buxton
    • H04B1/64H04L27/00H04B1/00
    • H04B1/64H04L27/00
    • A method and apparatus are provided that improve data transmissions in a wireless network, optimized for the transmissions of voice signals, by companding data signals electrically about a spectral shaping module in data handling devices, preferably modems, at both the transmitting and receiving ends of the wireless network. At the transmitting end, the companding is performed by a compressor, electrically preceding a data de-emphasis module, and an expander, electrically succeeding the data de-emphasis module. At the receiving end, the companding is performed by a compressor, electrically preceding a data pre-emphasis module, and an expander, electrically succeeding the data pre-emphasis module. At both ends of the wireless network, companding better serves to facilitate the transmission of data across the wireless network because complimentary functions are performed symmetrically at both ends and because data streams are more complimentarily coupled to, and from, wireless transceivers that similarly perform companding electrically about voice and data streams between the transmitting and receiving ends. Such wireless transceivers being spectrally optimized for voice signal transmissions wherein spectral advantages occurring for voice signals causes spectral disadvantages for data signals within the same transceiver.
    • 提供了一种方法和装置,其通过在数据处理装置(优选地,调制解调器)中电传递数据信号,在数据处理装置(优选地,调制解调器)的两端发送和接收端,来改善无线网络中针对语音信号的传输而优化的数据传输 无线网络。 在发送端,通过在数据去加重模块之前的压缩机和扩展器执行压扩,电扩展数据去加重模块。 在接收端,通过在数据预加重模块之前的压缩机和扩展器执行压扩,电扩展数据预加重模块。 在无线网络的两端,压缩扩展更好地用于促进跨越无线网络的数据传输,因为互补功能在两端对称地执行,并且因为数据流更加恭维地耦合到无线收发器,并且与无线收发器类似地执行电压扩展 关于发送和接收端之间的语音和数据流。 这样的无线收发器对于语音信号传输进行频谱优化,其中为语音信号发生的频谱优点导致同一收发机内的数据信号的频谱缺陷。