Exact(2)
In the existing conventional homogeneous networks, the maximum received signal strength (max-RSS) is widely adopted, which can achieve the anticipated performance.
In fact, J r time-shifts the transmitted signals and extends them up to the maximum received signal duration (by zero-padding) and it is defined as {boldsymbol{J}}_r=left[begin{array}{c}hfill {0}_{left( r-1right times r-1right times {boL}symbol{I}}_L hfill hfill {boldsymbol{}_r- rrI}ht)times L}_Lill end{array}righfill
Similar(58)
The results show that the maximum value of received signal is slightly affected by changes in the diameters and positions of the gas bubble.
This testbed is capable of measuring the minimum, maximum, and average received signal strength indicator (RSSI), bit error rate (BER), packet error rate (PER), packet loss rate (PLR), and the bit error locations.
If D adopts the maximum ratio combination, the received signal of the destination node is y(t)={omega}_1{y}_{s, d}(t)+{omega}_2{y}_{r, d}(t) (3).
Conveniently, the eigenvector r corresponding to maximum eigenvalue represents the desirably received signal.
After phase I, each relay decodes the received signal with maximum likelihood and obtains vector s ̂, which is an estimation of the transmitted symbols.
The receiver applies an auto-correlation function (ACF) on the received signal, and the maximum absolute value of this function is chosen as an estimate of the symbol timing.
In addition, theoretical bounds and approximate maximum-likelihood algorithms based on received signal strength measurements were derived in [10], showing that the achievable estimation accuracy is relatively poor if all PU transmission parameters are unknown and SUs can rely only on energy measurements.
Specifically, we formulate human localization problem as finding a location with the maximum posterior probability given the observed received signal strength indicator from passive radio-frequency identification tags.
As a matter of fact, the receiver could combine the received signal from all the senders to get better signal quality by using the Maximum Ratio Combining (MRC) [8] signal processing technique.
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Justyna Jupowicz-Kozak
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