HSDPA - Taking 3G to the Next Stage!

On account of 3.5G era's approaching,lots of people still out of clue on "what is 3G? even 3.5G? "3.5G is a new evolution on the telecom.market (even though WiMAX, WiFi, I-HSPA & 3.9G are about to be advent in the coming years). HSDPA(High Speed Downlink Packet Access) is the main course to materialize the 3.5G turn to be true.

Let me brief to you some basics/fundamentals about HSDPA (I won't go through too detail like fomula or equations) :

HSDPA is a concept included in 3GPP release 5 specifications. The actual implementation comprises of several more or less independent features, each of which is designed to bring some kind of performance or operability improvement for the network.

The main features of HSDPA include fast link adaptation and layer-1 retransmissions. These replace the conventional WCDMA features variable spreading factor and fast power control. With varied modulation algorithms, the downlink can be 1.8~7.2M with QPSK, 2.4~10.7M with 16QAM as the plot shows.(but remember they're based on "THEORY") Right now in Taiwan ChungHwa Telecom. is providing 3.6M in the downlink.

In conclusion, the 3.5G technology, in simple words, supports you high-speed downloading service e.g. using WAP, Internet surfing, FTP...
Easy right? hurry to apply a 3G account to catch up with this new telcomm. epoch :))