Layered Uplink Transmission in Clustered Cellular Networks

TL;DR

This paper proposes enhanced layered uplink transmission schemes for clustered cellular networks that leverage overlapping clusters and scheduling, significantly improving performance and reducing complexity in Wyner-type models.

Contribution

It introduces overlapping clusters and scheduling into existing collaborative schemes, achieving near-optimal performance with lower complexity.

Findings

Near-optimal performance at practical SNRs

Improved performance over existing cluster schemes

Reduced complexity through overlapping and scheduling

Abstract

The demand for higher data rates and the scarce spectrum resources drive the adoption of collaborative communication techniques. In this work we shown that the existing cluster based collaborative schemes can be greatly improved in terms of both the achievable performance, and complexity, by allowing overlapping across clusters. Further improvement is achieved by incorporating scheduling to the decoding process. Different variants of the improved schemes are considered and are shown to achieve near optimum performance for practical signal-to-noise ratios for the one- and two-dimensional (hexagonal) Wyner-type models.