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Usually, when combining two or more services (each having their own QoS requirements), it is difficult to achieve a common operation point for all the services. When we satisfy the highest QoS requirement, the other services will be operating at "unnecessary high quality". In this case, a lot of bandwidth is wasted due to a low traffic load. To solve this problem and to achieve higher spectral efficiency, a "QoS balance" method is developed to optimise the allocation of transmission power and evaluated in a wideband DS-CDMA environment integrated with video and voice services. Our simulation results demonstrate that the capacity of the network or spectral efficiency is improved significantly, by this optimal power allocation scheme.
Global Telecommunications Conference, 1999. GLOBECOM '99 (Volume:5 )
Date of Conference: 1999