Abstract
In this paper, we investigate the expected outage probability and expected throughput of a multi‐user multiple‐input multiple‐output (MU‐MIMO) transmission in mobile ad hoc networks (MANET) in the presence of co‐channel interference and unpredictable inter‐beam interference. In order to achieve multi‐user diversity gain, the receiving nodes are required to report measured channel information to the transmitting node. During the time gap between channel measurement and data transmission, the channel may change with the location of moving nodes. The unpredictable behavior may cause a mismatch between the weight of beams and the instantaneous channel and the inter‐beam interference in the data transmission phase. In order to obtain the closed form expected outage probability, we categorize the behavior of nodes according to whether the inter‐beam interference exists or not and the number of received interference beams. The probability of each category and the closed form outage probability of an instantaneous MU‐MIMO transmission of each category are derived. Additionally, the expected throughput of an MU‐MIMO transmission which changes with the number of receiving nodes is obtained, and the optimal value of receiving nodes to maximize the expected throughput is discussed. Numeric results show the unpredictable inter‐beam interference degrades the outage probability performance. Reducing the duration of the time gap could improve the expected outage probability and expected throughput.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Similar Papers
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.