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In this paper, we provide a comprehensive analysis of the multi-antenna transmission in a K-tier downlink heterogeneous cellular network (HCN). We first propose a reliability-oriented mobile access policy with an access threshold, in which each user connects to the strongest base station in terms of the truncated long-term received power. Under this policy, we derive for a random user explicit analytical...
A new scenario of multiple access technology for beyond 3G wireless communications named CDD- dual-CDMA is proposed. CDD (code-division duplex) is a method to improve the spectrum efficiency by adding smart codes into time-division duplex (TDD) technology. The concept of dual-CDMA (dual-code division multiple access) is dividing traffic channels by both LAS (large area synchronous) codes and LS (loosely...
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