ICCC 2012, 1st IEEE International Conference on Communications in China, August 15-18, 2012, Beijing, China
We consider the random access channel (RACH) of a multi-beam satellite system with universal frequency reuse. We benefit from the spatial diversity and the strong directivity of multiple antennas at the satellite to resolve contentions and perform channel estimation. We propose two approaches to detect active satellite terminals (ST) and estimate the channel coefficients of some or all the colliding STs: Grid Reduction (GR) and Successive Channel Cancelation (SCC) algorithm. The performance of the proposed approaches is assessed by numerical results and compared with the conventional satellite RACH system. Both approaches outperform the conventional RACH with Slotted-ALOHA and SCC algorithm shows better performance than GR approach.
Type:
Conférence
City:
Beijing
Date:
2012-08-15
Department:
Systèmes de Communication
Eurecom Ref:
3811
Copyright:
© 2012 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
See also:
