search for: hscds

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2007 May 05
0
AMR vs Speex on wireless networks.
NB for CSD/HSCSD and WB for UMTS/HSDPA. The UMTS/HSDPA services already provides an excellent turbo code correction. For what i know i can tell you more about corrupted packets. The BER ranges from 10^-5 to 10^-2 for CSD/HSCDS in transparent mode, and from 10^-9 to 10^-6 for UMTS/HSDPA. It depends on signal quality and if you're walking/standing or if you're in real mobility (for example talking while driving a car), etc... So it depends. For example, if it is raining, the water causes lots of refletions and rise...
2007 May 05
0
AMR vs Speex on wireless networks.
...io 2007, 23:06:40 Oggetto: Re: [Speex-dev] AMR vs Speex on wireless networks. NB for CSD/HSCSD and WB for UMTS/HSDPA. The UMTS/HSDPA services already provides an excellent turbo code correction. For what i know i can tell you more about corrupted packets. The BER ranges from 10^-5 to 10^-2 for CSD/HSCDS in transparent mode, and from 10^-9 to 10^-6 for UMTS/HSDPA. It depends on signal quality and if you're walking/standing or if you're in real mobility (for example talking while driving a car), etc... So it depends. For example, if it is raining, the water causes lots of refletions and rise...