In this paper we consider the most recent channel-aware performance optimization approaches primarily for cellular wireless networks. This survey is a summary of several core research works on the effective design and implementation principles of the advanced cross-layer resource allocation and link adaptation schemes. Following the original papers, we emphasize the three key performance metrics: spectral efficiency, energy efficiency and quality-of-service perception of wireless clients. Further, we present a systematic overview of relevant literature covering the main challenges and open problems of existing optimization techniques. We conclude that the state-of-the-art approaches should be extended further to take into account additional optimization parameters and aim at higher degree of control over trade-offs associated with the key metrics.

In this paper we address the overall message delay analysis of IEEE 802.16 wireless metropolitan area network with contention-based multiple access of bandwidth requests. The overall delay consists of the reservation and scheduling components. Broadcast polling is used for bandwidth reservation with binary exponential backoff (BEB) collision resolution protocol and a simple scheduling is applied at the base station. An analytical model is developed with Poisson arrival flow for the Non Real-Time Polling Service (nrtPS) class. The model enables asymmetric traffic flows, different message sizes at the subscriber stations and also allows for Best Effort (BE) service class. An approximation of the mean overall delay is established for the nrtPS service class. The analytical model is verified by means of simulation.