A SIMO Fiber Aided Wireless Network Architecture

TL;DR

This paper introduces a SIMO fiber aided wireless network architecture that combines wireless and optical fiber channels, optimizing capacity and operational parameters for high-speed mobile connectivity.

Contribution

It proposes a novel SIMO FAWNA scheme with quantized wireless signals over fiber, demonstrating exponential capacity approach and optimal operating conditions.

Findings

Capacity approaches architecture exponentially with fiber capacity.

Optimal wireless bandwidth and number of interfaces depend on fiber capacity.

Low-complexity interfaces do not need transmitter code knowledge.

Abstract

The concept of a fiber aided wireless network architecture (FAWNA) is introduced in [Ray et al., Allerton Conference 2005], which allows high-speed mobile connectivity by leveraging the speed of optical networks. In this paper, we consider a single-input, multiple-output (SIMO) FAWNA, which consists of a SIMO wireless channel and an optical fiber channel, connected through wireless-optical interfaces. We propose a scheme where the received wireless signal at each interface is quantized and sent over the fiber. Though our architecture is similar to that of the classical CEO problem, our problem is different from it. We show that the capacity of our scheme approaches the capacity of the architecture, exponentially with fiber capacity. We also show that for a given fiber capacity, there is an optimal operating wireless bandwidth and an optimal number of wireless-optical interfaces. The wireless-optical interfaces of our scheme have low complexity and do not require knowledge of the transmitter code book. They are also extendable to FAWNAs with large number of transmitters and interfaces and, offer adaptability to variable rates, changing channel conditions and node positions.