Ontogeny, Phytogeny, and Cellular Cooperation

The Role of Ontogeny in the Evolution of Human Cooperation

To explain the evolutionary emergence of uniquely human skills and motivations for cooperation, Tomasello et al. (2012, in Current Anthropology 53(6):673-92) proposed the interdependence hypothesis. The key adaptive context in this account was the obligate collaborative foraging of early human adults. Hawkes (2014, in Human Nature 25(1):28-48), following Hrdy (Mothers and Others, Harvard Univer...

Cooperation in clustered cellular systems

The performance limitations of conventional cellular wireless networks in terms of throughput and coverage are by now well recognized. This is due to extensive deployment of 2G and 3G systems, and has stimulated the search for new approaches to alleviate these drawbacks. A key technology that has been identified to fulfill this goal is cooperation, to be employed at either the base station (BS)...

Andrew Ewald: Understanding cellular cooperation

Cellular cooperation with shift updating and repulsion.

Population structure can facilitate evolution of cooperation. In a structured population, cooperators can form clusters which resist exploitation by defectors. Recently, it was observed that a shift update rule is an extremely strong amplifier of cooperation in a one dimensional spatial model. For the shift update rule, an individual is chosen for reproduction proportional to fecundity; the off...

User cooperation in an asynchronous cellular uplink

We present in this paper, multi-user decode-and-forward (DF) sharing scheme and a practical low-complexity adaptive pseudo-linear receiver design for cooperative diversity in an asynchronous cellular uplink. The DF schemes provide near maximumlikelihood (ML) performance, including full diversity and significant throughput improvements over no-sharing and existing schemes, under linear receiver ...