Mobile WiMAX standard defines air interface for mobile broadband wireless access (BWA) systems and
aimed to provide high data rate with seamless mobility while maintaining the quality of service (QoS).
However, QoS of real-time applications depends on the link quality, which necessitate the channel-aware
connection admission control (CAC) and scheduling schemes. In this paper Modulation aware CAC
scheme and base station (BS) uplink scheduling algorithm are proposed to improve the system capacity and
QoS performance respectively. The proposed CAC scheme aims to increase the admission of higher priority
real time services by degrading the bandwidth of admitted lower priority connections on the basis of their
channel status without deteriorating their QoS performance much. The performances of proposed
algorithms are evaluated through simulation by considering the metrics like throughput, delay and number
of connections admitted