Zhongji Hu

Inter Node B Node Synchronization in SFN for MBMS Transmission

With the increasing high bandwidth application occurrence in wireless systems, multimedia broadcast/multicast service is proposed with the benefit that the data is sent once on each link. MBMS is a point-to-multipoint service in which data is transmitted from a single source entity to multiple recipients. The study found that with evolved UTRA it would be feasible to operate point to multipoint transmissions as a single frequency network and benefit from energy combining without experiencing inter-cell interference. SFN reception is transparent to the terminal, however the increased inter node B node synchronization requirement should be taken into account in designing evolved UTRAN. This paper discusses four candidates of node synchronization scheme, and then proposed a distributed synchronization scheme via air interface based on the idle periods in downlink.

Full Non-Orthogonal Integration of Unicast and Single Cell Broadcast in LTE-Advanced

This paper proposes a new full non-orthogonal integration scheme for unicast and broadcast data streams in future OFDM system, in which broadcast is deployed in single cell scenario. It is firstly analyzed why todays research results of the integration of unicast and broadcast in Single Frequency Network (SFN) manner cannot work in single cell deployment scenario. By adjusting the modulation constellation map of todays integration system, the proposed scheme, called crossed-HM, works well in the discussed scenario. System level performances are investigated in this paper, which show that the proposed scheme has 40% gain against the discussed SFN integration scheme in terms of effective frequency efficiency. Performances for single cell broadcast without integration to unicast are shown for comparison.