The best Side of Interconnection with WiMAX
The best Side of Interconnection with WiMAX
Blog Article
HSDPA and HSUPA increase new abilities into the 3G UMTS (Universal Mobile Telecommunication Method) networks for FDD and TDD deployments. The main target of HSPA (HSDPA and HSUPA) is higher bit rates and decreased latencies. As Element of 3GPP release 5, HSDPA introduces a fresh higher-velocity downlink channel shared amongst multiple buyers. It makes use of a A great deal shorter transmission period of just 2 milliseconds than over ten ms in the initial UMTS (3GPP Launch 99). As a result, it is far faster at switching people and responding to your transforming radio network ailments. In addition, it makes use of quicker data visitors scheduling which permits it to allocate the vast majority of accessible cell potential to at least one consumer so which they acquire substantial-speed data inside a short Place of time. HSDPA can flexibly use the QPSK or 16 QAM modulation techniques to utilise radio network means effectively. On top of that, it uses remarkable coding methods and more quickly retransmission of faulty data packets.
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It is used to avoid interference, spying and jamming. The spreading code applied is understood to transmitter and receiver only.
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Base station sends the received sign electricity data for the transmitter and tells to increment or decrement the transmission energy appropriately in subsequent transmissions.
制式中，区分各个信道主要不再依靠频率和时隙等方法，同一地区不同用户同时使...
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灵活性高： 多载波系统能够更容易适应不同的数据速率和带宽要求，提供更加灵活的服务。
There is absolutely no data carried to the forward pilot. more info With its powerful autocorrelation perform, the ahead pilot will allow mobiles to find out method timing and distinguish different BTSs for handoff.
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