Title :
On the Flow-Level Delay of a Spatial Multiplexing MIMO Wireless Channel
Author :
Mahmood, Kashif ; Rizk, Amr ; Jiang, Yuming
Author_Institution :
Q2S, Norwegian Univ. of Sci. & Technol., Trondheim, Norway
Abstract :
The MIMO wireless channel offers a rich ground for quality of service analysis. In this work, we present a stochastic network calculus analysis of a MIMO system, operating in spatial multiplexing mode, using moment generating functions (MGF). We quantify the spatial multiplexing gain, achieved through multiple antennas, for flow level quality of service (QoS) performance. Specifically we use Gilbert-Elliot model to describe individual spatial paths between the antenna pairs and model the whole channel by an N-State Markov Chain, where N depends upon the degrees of freedom available in the MIMO system. We derive probabilistic delay bounds for the system and show the impact of increasing the number of antennas on the delay bounds under various conditions, such as channel burstiness, signal strength and fading speed. Further we present results for multi-hop scenarios under statistical independence.
Keywords :
MIMO communication; Markov processes; antenna arrays; quality of service; Gilbert-Elliot model; MIMO wireless channel; N-state Markov chain; QoS; bursty channels; fading speed; flow-level delay; moment generating functions; multihop scenarios; multiple antennas; probabilistic delay bounds; quality of service analysis; signal strength; spatial multiplexing gain; spatial multiplexing mode; statistical independence; stochastic network calculus analysis; Delay; Fading; MIMO; Markov processes; Multiplexing; Quality of service;
Conference_Titel :
Communications (ICC), 2011 IEEE International Conference on
Conference_Location :
Kyoto
Print_ISBN :
978-1-61284-232-5
Electronic_ISBN :
1550-3607
DOI :
10.1109/icc.2011.5963105
