Cross-layer design has been considered
recently as a new approach when designing MAC
protocols in systems with diversity such as CDMA.
This paper goes one step further in the cross layer
design by proposing a PHY-MAC dialogue involving
the exchange of parameters such as BER and active
users. By means of this PHY-MAC dialogue, system
performance can be improved. A two-stage receiver is
used at PHY level. The first stage tracks active users
while the second stage is a data demodulator. The
Modified Dynamic Queue Protocol (MDQP) is
proposed as the MAC protocol of our system. When
the knowledge of active users is possible, it is
demonstrated by simulations that MDQP outperforms
CitationPérez, A.; REALP, M. PHY-MAC dialogue with multi-packet reception. A: International Workshop on Broadband Wireless Ad-hoc networks and Services, ETSEI. "International Workshop on Broadband Wireless Ad-hoc networks and Services, ETSEI". Sophia Antipolis: 2001.
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