Exact(1)
To simplify the problem, in the following, we will instead find the solution that maximizes a close upper bound of the average system performance T g.
Similar(58)
We can thus construct a relatively close upper bound on the instantaneous packet error rate: p_{p}(gamma) leq min left{ 1, N p_{s}(gamma) right} (13).
Then, we employ matrix permanents to derive a closed-form tight upper bound for the ergodic sum capacity.
We then employ matrix permanents to derive a closed-form tight upper bound for the ergodic sum capacity of the jointly correlated MIMO channel.
We also derived a closed-form tight upper bound for the ergodic capacity, based on which we developed low-complexity power allocation solutions using convex optimization techniques and a simple IWFA.
A similar cooperative scheme with one-way single relay is analyzed in [32], where a tight closed-form upper bound on the error probability is derived.
In this FSO scenario, unlike previous capacity bounds derived from the classic capacity of the well-known AWGN channel with uniform input distribution, a new closed-form upper bound on the capacity is found by bounding the mutual information subject to an average optical power constraint and not only to an average electrical power constraint.
In [10], a new closed-form upper bound on the capacity is found through a sphere-packing argument for channels using equiprobable binary pulse amplitude modulation (PAM) and subject to an average optical power constraint, presenting a tighter performance at lower optical signal-to-noise ratio (SNR) if compared with [8].
By substituting (38) into (25), a closed-form BER upper bound for an arbitrary power delay profile is obtained.
When malicious users can be detected, as discussed in Section 4.1, the performance will get close to upper bound (the performance of honest nodes) as detection round increases.
This article proposes the use of system value-based optimization with a symbol-level minimum mean square error equalizer and a successive interference cancellation which achieves a system value upper bound (UB) close to the Gaussian UB for the high-speed downlink packet access system without affecting any significant computational cost.
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