Dengkun Xiao

A Research on Power Consumption of Receiver in CA Scenarios

Carrier Aggregation is one of the most important LTE-A features, and different CA scenarios had been proposed. As LTE-Advanced receivers should support both wideband and narrowband transmission in CA scenarios, it would be of good significance to clarify, for different LTE-A receiver structures, which transmission mode is more power efficient. In this paper we present and discuss three potential UE receiver structures, and make a detailed comparison of power consumption for different structures in two parts-RF ends part and ADC part, numerical calculation of power consumption is also given. We propose power consumption should be taken into consideration in relative downlink transmission and give an example based on our conclusion in the end.

Neighbor Carrier Signal Strength Estimation for Carrier Aggregation in LTE-A

In Advanced Long Time Evolution (LTE-A) mobile wireless communication system, the Carrier Aggregation (CA) technique feature was introduced to support large transmission bandwidth. But due to the capacity limit of UE, to measure all component carriers with low latency and cost has been a challenge. In this paper a solution is presented in which only some reference component carriers need to be measured; the signal strength of others are estimated by utilizing the correlation between these component carriers and reference component carrier. The simulation results show that the estimation error is acceptable.