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Outage limited cooperative channels: protocols and analysis

Azarian Yazdi, Kambiz
http://rave.ohiolink.edu/etdc/view?acc_num=osu1154740723

Abstract Details

2006, Doctor of Philosophy, Ohio State University, Electrical Engineering.
We propose novel cooperative protocols for various coherent flat-fading channels composed of half-duplex nodes. We consider relay, cooperative broadcast (CB), multiple-access relay (MAR) and cooperative multiple-access (CMA) channels and devise efficient protocols for them. We evaluate the proposed protocols using the diversity-multiplexing tradeoff (DMT). We also consider ARQ cooperative channels where users are provided with ACK/ NACK signals indicating success or failure of destination in decoding their messages. We show that utilization of ARQ techniques not only improves the tradeoff achieved by non-ARQ protocols, but also provides novel opportunities for cooperation that are otherwise unavailable. A distinguishing feature of the protocols proposed in this dissertation is that they do not rely on orthogonal subspaces, allowing for a more efficient use of resources. In fact, based on our results one can argue that the sub-optimality of previously proposed protocols stems from their use of orthogonal subspaces rather than the half-duplex constraint. We also provide a better understanding of the asymptotic relationship between the probability of error, transmission rate, and signal-to-noise ratio, as compared to what DMT offers. In particular, we identify the limitation imposed by the multiplexing gain notion and provide a new formulation, called the throughput-reliability tradeoff (TRT), that avoids this limitation. The new characterization is then used to elucidate the asymptotic trends exhibited by the outage probability curves of MIMO channels.
Hesham El Gamal (Advisor)
191 p.
Cooperative Diversity; Diversity-Multiplexing Tradeoff; Throughput-Reliability Tradeoff; Dynamic Decode and Forward; Nonorthogonal Amplify and Forward; Half-Duplex Radio; Relay Channel; Multiple-Access Channel; Broadcast Channel; Automatic Repeat Request

Recommended Citations

Citations

  • Azarian Yazdi, K. (2006). Outage limited cooperative channels: protocols and analysis [Doctoral dissertation, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1154740723

    APA Style (7th edition)

  • Azarian Yazdi, Kambiz. Outage limited cooperative channels: protocols and analysis. 2006. Ohio State University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1154740723.

    MLA Style (8th edition)

  • Azarian Yazdi, Kambiz. "Outage limited cooperative channels: protocols and analysis." Doctoral dissertation, Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=osu1154740723

    Chicago Manual of Style (17th edition)

osu1154740723
774
© 2006, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.