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Exact SEP and performance bounds for orthogonal space‐time block codes in cooperative multiantenna AF relaying networks
Author(s) -
Jeong UiSeok,
Ryu GiHoon,
Jang DongSun,
Ko Kyunbyoung
Publication year - 2019
Publication title -
international journal of communication systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.344
H-Index - 49
eISSN - 1099-1131
pISSN - 1074-5351
DOI - 10.1002/dac.3943
Subject(s) - relay , computer science , diversity gain , node (physics) , rayleigh fading , moment generating function , antenna (radio) , topology (electrical circuits) , block code , fading , array gain , algorithm , telecommunications , antenna array , channel (broadcasting) , mathematics , probability density function , power (physics) , statistics , physics , decoding methods , acoustics , combinatorics , quantum mechanics
Summary In this paper, we derive a moment generating function (MGF) for dual‐hop (DH) amplify‐and‐forward (AF) relaying networks, in which all nodes have an arbitrary number of antennas, with orthogonal space‐time block code (OSTBC) transmissions over Rayleigh fading channels. We present an exact error rate expression based on the derived MGF and another analytical approach to derive achievable performance bounds as closed‐forms of symbol error rate, outage probability, and normalized channel capacity. Furthermore, we derive the asymptotic behavior of symbol error rate and outage probability. From this asymptotic behavior, it is shown that the diversity order and its dependence on antenna configurations can be explicitly determined. Simulation results are also presented to verify their accuracy by comparing with numerical results and to provide an insight to the relationship between relaying networks' antenna configuration and diversity order. It is confirmed that the transmit antenna gain of the source node and the receive antenna gain of the relay node can be obtained only when the relay is close to the destination, and then, the transmit antenna gain of the relay node and the receive antenna gain of the destination node can be obtained only when the relay is close to the source.