Diverse modulation techniques let EVDO to transmit various quantities of data per symbol, with more intricate techniques providing higher data rates.
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With CDMA, signals that aren't correlated with the channel of desire (which include other PN offsets from adjacent cellular base stations) look as noise, and alerts carried on other Walsh codes (that happen to be adequately time aligned) are fundamentally taken out inside the de-spreading procedure.
抗干扰能力 ：通过扩展信号频谱，减少了信号的能量密度，提高了信号对噪声和干扰的抵抗力。
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In case you presently know the 3GPP specification or report selection, you usually takes a more direct route, by using the Specification Sequence page or by means of direct access to your FTP server.
Base station sends the obtained sign electric power facts on the transmitter and tells to increment or decrement the transmission electricity accordingly in subsequent transmissions.
接收端处理： 移动终端接收多个载波上的信号，进行相应的处理以恢复数据。
This paper addresses the newest approaches for bettering the data rates and spectral efficiency of the higher pace packet access (HSPA) method of wideband CDMA (WCDMA). The advancements are as a consequence of…
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Other ahead channels, chosen by their Walsh code, have data with the network for the mobiles. Data is made up of network signaling and person website IS-856 traffic. Typically, data for being transmitted is divided into frames of bits.