Distributed space-time coding in two-way fixed gain relay networks over Nakagami-m fading
Trung Q. Duong, Hien Quoc Ngo, Hans‐Jürgen Zepernick, Arumugam Nallanathan · 2012
The distributed Alamouti space-time code in two-way fixed gain amplify-and-forward (AF) relay is proposed in this paper. In particular, closed-form expressions for approximated ergodic sum-rate and exact pairwise error probability (PWEP) are derived for Nakagami-m fading channels. To reveal further insights into array and diversity gains, an asymptotic PWEP is also obtained. Finally, numerical results are provided to corroborate the proposed theoretical analysis.