Modified quantum superdense coding for distributed communications

Abstract

The efficiency of medium access control strongly influences the performance of distributed wireless networks. Collisions in the channel and unused timeslots result in poor performance. On the other hand, quantum superdense coding proved that entanglement-assisted quantum communications can improve the data transmission rates compared with classical systems. It allows sending two classical bits from one party to another in exchange of one quantum bit and a pre-shared entangled Bell pair. This paper introduces a new protocol, which involves a modified version of superdense coding to medium access control of distributed communication systems. Using a pre-shared entangled Bell pair and one classical bit, 2.5 classical bits can be transmitted in average between the parties in each timeslot. This means not only valuable increase in capacity, but the two-way distributed operation opens new fields of investigation.

Extension and analysis of modified superdense-coding in multi-user environment

“…Modified superdense coding was published for two terminals [3]. It is an algorithm that uses principles from both time-slotted systems and superdense coding.…”

“…Modified superdense coding is an algorithm using also the phenomena of entanglement to provide efficient communication between two communication parties, using a time-slotted system. It was first published for two users [3]. This paper is organized as follows.…”

Asymptotic design of quantization and bit allocation for distributed estimation in wireless sensor networks

“…Recently, many relevant aspects of WSNs, such as, network architectures, routing protocols, data fusion, networked control, etc. have been drawn extensive attentions [1][2][3][4][5][6].…”