TY - GEN
T1 - Error propagation in a multi-way relay channel
AU - Islam, Shama N.
AU - Sadeghi, Parastoo
PY - 2011
Y1 - 2011
N2 - This paper studies the error propagation phenomenon for a multi-way relay channel based on binary phase shift keying (BPSK) modulation and network coding in the physical layer. Though physical layer network coding enhances the throughput of a multi-way relay system by reducing number of time slots, its error performance can be highly degraded since decision about a user's message depends on previous decisions. In this paper, the error probability of a multi-way relay system is examined through both analytical and numerical methods. We show that the system performance is significantly controlled by signal power and number of users accessing the single relay. Based on numerical analysis, the critical number of users to limit the error rate within an acceptable upper bound is found.
AB - This paper studies the error propagation phenomenon for a multi-way relay channel based on binary phase shift keying (BPSK) modulation and network coding in the physical layer. Though physical layer network coding enhances the throughput of a multi-way relay system by reducing number of time slots, its error performance can be highly degraded since decision about a user's message depends on previous decisions. In this paper, the error probability of a multi-way relay system is examined through both analytical and numerical methods. We show that the system performance is significantly controlled by signal power and number of users accessing the single relay. Based on numerical analysis, the critical number of users to limit the error rate within an acceptable upper bound is found.
KW - Error propagation
KW - functional decode and forward
KW - maximum a posteriori (MAP) detection
KW - multi-way relay
KW - physical layer network coding
UR - http://www.scopus.com/inward/record.url?scp=84857315452&partnerID=8YFLogxK
U2 - 10.1109/ICSPCS.2011.6140818
DO - 10.1109/ICSPCS.2011.6140818
M3 - Conference contribution
SN - 9781457711800
T3 - 5th International Conference on Signal Processing and Communication Systems, ICSPCS'2011 - Proceedings
BT - 5th International Conference on Signal Processing and Communication Systems, ICSPCS'2011 - Proceedings
T2 - 5th International Conference on Signal Processing and Telecommunication Systems, ICSPCS'2011
Y2 - 12 December 2011 through 14 December 2011
ER -