History of wireless communications

This article examines China’s efforts to restore cable telegraph rights from the establishment of the Republic of China to the end of World War II. Challenging the conventional dichotomy of “Chinese” and “Western” actors in rights recovery issues, this article explores the intricate power relations between foreign cable companies, international interests groups and various political factions in China. It analyses China’s reclaim of cable sovereignty in three phases, each characterised by a particular controversy—the intra-clique struggle of the Communications Clique
during the early Republic and the warlord era; the rivalry between the Nationalist Party, military and the state during the Nanjing decade; and the direct Sino-Japanese conflict during wartime. The article presents the argument that for the various interest groups, ideologies such as imperialism and nationalism served as rhetoric in their respective pursuits. It was the daily political tensions that played a crucial role in shaping how cable policies were devised.

Link to the article: https://www.cambridge.org/core/journals/journal-of-chinese-history/article/circuits-of-power-chinas-quest-for-cable-telegraph-rights-19121945/DB33C3A23A9B041F6C521DDB4432C5D2

Nikola Tesla has been known as a Serbian scientist and inventor who has made a great impact by designing modern alternating current (AC) electricity supply systems. However, it is less known that his patents in the field of communications represent a basis of present-day ICT systems. In this paper, we present Tesla’s most important patents and results regarding mobile and wireless communications and Internet services: patents concerning transmission lines, radio technologies, logic gates and digital modulations. We analyze the patents related to frequency-hopping spread spectrum (FHSS), orthogonal frequency-division multiplexing (OFDM), and wireless cryptography in details. In addition, we present Tesla's vision of communication services that have become possible to implement almost a hundred years later.