Approach towards the achievable sum rates capacity of Gaussian MIMO broadcast channels;

By using the secret sharing scheme based on the MDS code as the basic component in this paper, we propose a new provably secure conference-key agreement protocol under the broadcast channel.

This thesis addresses the problem of minimizing the total transmit power subject to individual rate constraints in broadcast channel with multiple antennas at the transmitter and one antenna at each receiver.

Space-time iterative equalization and decoding system and algorithm in MIMO channel;

MIMO channel modeling and simulation under the environment of high-speed railway

A 3D statistical channels model for mobile frequency selective fading MIMO channels was proposed and a new joint space-time-frequency correlation function was derived.

Application research of blind signal separation by using fuzzy neural networks in MIMO channels;

A scheme of designing differential space-time block code is proposed for correlated fading MIMO channels.

Aiming at single radio multi-channel MAC protocol\'s problems,such as the requirement of time synchronization and lots of orthogonal channels,large number of multi-channel hidden terminals,loss of single-hop multi-channel broadcast data,etc,the authors propose a competition based multi-channel MAC protocol,called HM-MAC,to tackle those problems for wireless sensor network.

This paper adopted variant fan-out no-balance tree based on Huffman index tree in multi-channel broadcast,and proposed Nearest Cycle Method(NCM) to broadcast all index nodes.