TY - GEN
T1 - Detecting the Number of Active Users in IRSA Access Protocols
AU - Sun, Jingyun
AU - Liu, Rongke
AU - Paolini, Enrico
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/12/18
Y1 - 2018/12/18
N2 - We develop a maximum a posteriori detector for the number of unrecovered users in coded random access systems based on the irregular repeat slotted Aloha (IRSA) protocol, where each user transmits in random slots multiple packet replicas whose number (known as the user degree) is drawn according to a given probability mass function and where successive interference cancellation (SIC) is exploited at the receiver. The detector is capable to track over SIC iterations the a posteriori probability distribution of a vector whose elements are the numbers of not yet recovered active users of the various degrees. Numerical results are provided to illustrate the capability of the detection algorithm to considerably reduce the mean square error on the number of active users, taking advantage of the iterative SIC process.
AB - We develop a maximum a posteriori detector for the number of unrecovered users in coded random access systems based on the irregular repeat slotted Aloha (IRSA) protocol, where each user transmits in random slots multiple packet replicas whose number (known as the user degree) is drawn according to a given probability mass function and where successive interference cancellation (SIC) is exploited at the receiver. The detector is capable to track over SIC iterations the a posteriori probability distribution of a vector whose elements are the numbers of not yet recovered active users of the various degrees. Numerical results are provided to illustrate the capability of the detection algorithm to considerably reduce the mean square error on the number of active users, taking advantage of the iterative SIC process.
UR - https://www.scopus.com/pages/publications/85060551120
U2 - 10.1109/PIMRC.2018.8580950
DO - 10.1109/PIMRC.2018.8580950
M3 - 会议稿件
AN - SCOPUS:85060551120
T3 - IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
SP - 1972
EP - 1976
BT - 2018 IEEE 29th Annual International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 29th IEEE Annual International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2018
Y2 - 9 September 2018 through 12 September 2018
ER -