Preface

Shahid Mumtaz

Jonathan Rodriguez

Linglong Dai

Cellular communication systems historically have undergone a revolution about once every decade (e.g., an entirely new standard), driven by a combination of market demands and technology advances. We are now thinking 5G at the exploratory research phase, with industry consensus hinting toward commercialization around 2020 with widespread adoption by 2025. The market is demanding that 5G should support much higher system capacity (100–1000 ×) than current 4G systems, which already are close to the Shannon limit in point-to-point communication systems.

To address the 5G design targets, the information theory suggests that there are predominantly three key approaches to achieve several orders ...

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