FUNDAMENTAL RESEARCH IN
WIRELESS COMMUNICATIONS BY PROF. WILLIE W. LU
1: LU'S LAW - 1
No single Radio Transmission Technology (RTT) can do
both Broadband High-speed and Seamless Mobility in a
commercial environment. -
Principal of Lu's Law.
2:
LU'S LAW - 2
When wireless data rate increases, the radio
transmission range will decrease, and the mobility will
degrade tremendously. Such problem is hard to be solved
by signal processing technique alone in a commercial
environment.
3:
LU'S LAW - 3
Each wireless Radio Transmission Technology (RTT) has a
theoretical limitation on data rate in commercial
environment.
4:
LU'S LAW - 4
The mobile handset device is evolving from a traditional
transmission-specific radio system to the future
interface-based system. This future mobile phone will be
relying on Open Wireless Architecture (OWA) platform for
complete openness and simplicity.
5:
LU'S LAW - 5
Transmitting very high data rates over a fast-fading
mobile wireless link in a commercial environment does
not work because it requires very high S/N by the
increased receiver bandwidth and much more spectrum with
very low BER which is really hard to implement.
6:
LU'S LAW - 6
The future mobile device will have much simple system
and more transmission bandwidth with open wireless
architecture. Most signal processing and application
processing will be done in the shared mobile cloud.
CONCLUSION AND LU'S MODEL
1:
Cellular mobile RTT (such as CDMA, etc)
With high-speed
mobility, but only several Mb/s max of data rates.
2 :
High data rate RTT (such as OFDM, etc)
With high data rates
of tens of Mb/s or higher, but without seamless mobility.
3 :
Converged mobile Cellular and High data rate solutions
Multiple RTTs solution on Open Wireless Architecture (OWA)
platform.
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