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To quantify the error performance of wireless transmissions over fading channels, two parameters are usually used: diversity order and coding gain (see e.g., [7, 8]).
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We can also see that the curves for Case 2 and Case 3 have the same slope, which can also be shown using the diversity order expressions we derived.
We can also see that the denominator in (23) and (24) contains power of N at main channel SNR=1/β and thus, using (18) diversity order D=N is obtained.
Community leaders use diversity to silence democracy.
To simplify the expression, evaluation of the performance of MIMO detectors makes use of diversity order, which is a metric constructed from the error probability and average received SNR [27] (an introduction to the diversity order metric and its associated properties can be found in Appendix 2).
We can show that using this definition, diversity order of (16) and (17) can be obtained as one.
MIMO techniques can also be used to increase the diversity order for reliable transmission in a fading channel [1], [2].
These numerical approximations of the error probability Pe are then used to compute the diversity order of the considered cooperative scheme.
The system diversity order using the FDSTC protocol is higher than that using the DSTC protocol (especially, the FDSTC protocol obtains full diversity with NR-relays).
Our results indicate that the diversity order using GF(4) is three, but that the diversity order using the binary network code is only two.
Noteworthy, using sorted THP the diversity order is only one.
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