Welcome to the second issue of IJBDCN in 2009! This is a Special Issue guest-edited by Dr. Zoubir Mammeri of IR1T- Universite Paul Sabatier, France.rnWith the recent successful adoption of 3G network services around the world, the operators and service providers are gearing up for 3.5G and the truly interoperable, high bandwidth 4G networks. As this evolution is happening in the wireless cellular network domain, the highly successful IEEE 802.11 a, b, g and n local access wireless networks are paving way for high bandwidth and adaptable personal wireless communication networks as well.
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