Revisiting Wireless Communications
This chapter revisits the current communication systems, and emphasizes the significance of Shannon’s theorems in guiding their design. One necessary prerequisite for applying Shannon’s theorems is that the information source and transmission channel thus considered should have the property of stationary-ergodicity. However, emerging wireless technologies are facing new challenges in improving both their reliability and their system capacity, due to ever-increasing complexity and uncertainty caused by harsh interferences and complex services. In many of these scenarios, Shannon’s prerequisite may not always hold true for all systems; accordingly, the bit-based processing methods are not always the most appropriate. The search for a new processing paradigm is tantamount.
KeywordsWireless communications Complexity Uncertainty
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