Abstract
G. Mergen, V. Naware and L. Tong
"Asymptotic Detection Performance of Type-Based
Multiple Access Over Multiaccess Fading Channels"
Submitted to IEEE Transactions on Signal Processing
, May, 2005.
The problem of communicating sensor readings over a
multiaccess channel for detecting a target
using Type-Based Multiple Access (TBMA)
is considered. TBMA is analyzed in a
general framework by considering non-i.i.d.
data and non-identical channel gains. An asymptotically optimal detector is
proposed and its error-exponents for
detection probabilities are characterized
using tools from large deviations theory.
In case of i.i.d. channel gains, it is shown that the performance of TBMA
presents two distinct behaviors depending on whether the channel
gains have zero mean. Numerical simulations are used
to demonstrate
that the error exponents provide reasonably accurate
estimates of the performance of TBMA.