Delay-limited resource allocation algorithm suitable for V-BLAST type MIMO systems

Wireless channels provide an extremely challenging scenario to support quality data and multi-media services. In this paper, we consider the scenario of supporting vector delay-limited wireless multimedia services such as Constant Bit Rate (CBR) wireless video, where certain desired amount of data need to be transmitted through a vector channel within a given delay. We focus on the problem of energy minimization under target delay-limited rate and bit error rate constraints. We develop an adaptive modulation scheme for single user wireless systems for generic vector wireless communications systems model. In this paper we extend previous works on this problem to provide a recursive closed form solution that reduces memory requirements and make it suitable for real-time deployments. Through simulations we find improvements in average bit energy as we increase the delay.