TY - GEN
T1 - Investigations into a slotted ALOHA protocol for a mimo system operating under Rician channel conditions
AU - Hunchangsith, Konglit
AU - Liu, Xia
AU - Bialkowski, Marek E.
AU - Portmann, Marius
PY - 2010
Y1 - 2010
N2 - This paper investigates a Slotted ALOHA protocol for a multi-user wireless system operating under partial Line of Sight (LOS) conditions in which both the base station and mobile users are equipped with multiple element antennas. The investigations focus on how physical layer parameters such as spatial correlation, mutual coupling and Rician factor K affect the system capacity. Probability model for a Slotted ALOHA under the condition of a Rician channel model to form two-layer (Physical-Medium Access Control) expressions is considered. The model includes spatial correlation and mutual coupling in array antennas. The obtained results show that spatial correlation has a negative effect on the system performance while mutual coupling can improve capacity under the small spacing of array antenna elements. It is also shown that active LOS nodes in the network can have an adverse impact on the system capacity. Controlling probability of transmission of LOS nodes is presented as a possible solution to the problem.
AB - This paper investigates a Slotted ALOHA protocol for a multi-user wireless system operating under partial Line of Sight (LOS) conditions in which both the base station and mobile users are equipped with multiple element antennas. The investigations focus on how physical layer parameters such as spatial correlation, mutual coupling and Rician factor K affect the system capacity. Probability model for a Slotted ALOHA under the condition of a Rician channel model to form two-layer (Physical-Medium Access Control) expressions is considered. The model includes spatial correlation and mutual coupling in array antennas. The obtained results show that spatial correlation has a negative effect on the system performance while mutual coupling can improve capacity under the small spacing of array antenna elements. It is also shown that active LOS nodes in the network can have an adverse impact on the system capacity. Controlling probability of transmission of LOS nodes is presented as a possible solution to the problem.
KW - Cross-layer evaluation
KW - K factor
KW - MIMO
KW - Multiple antennas
KW - Mutual coupling
KW - Random access protocol
KW - Spatial correlation
UR - https://www.scopus.com/pages/publications/79952531861
U2 - 10.1109/ICSPCS.2010.5709666
DO - 10.1109/ICSPCS.2010.5709666
M3 - Conference contribution
AN - SCOPUS:79952531861
SN - 9781424479078
T3 - 4th International Conference on Signal Processing and Communication Systems, ICSPCS'2010 - Proceedings
BT - 4th International Conference on Signal Processing and Communication Systems, ICSPCS'2010 - Proceedings
T2 - 4th International Conference on Signal Processing and Communication Systems, ICSPCS'2010
Y2 - 13 December 2010 through 15 December 2010
ER -