Connectivity of wireless Ad Hoc sensor networks in shadow fading environment;

By analyzing the measure- ment data,the empirical channel characteristics such as path loss exponent,shadow fading,rms delay spread and rms azimuth spread have been extracted.

Considering the effect of the shadow fading and fast fading on the receive signal, the received useful signal and interference signal should be random variables which change continuously.

Grouping space time coding OFDM transmission scheme for multipath fading channel;

Research on nonlinear dynamical characteristics of multipath fading channels;

The performance of transmit diversity in the flat Rayleigh single-path channel and multi-path fading channel by the combination of STBC and traditional beamforming was investigated,and a new scheme of relizing space and time decoding was proposed in the multipath fading channel.

For a wide band ground-air communication system with a low elevation antenna,the channel is of severe multi-path fading,whereas its characteristic is quite different from that of a terrestrial mobile communication channel.

Multi-path fading is faced when wireless signal spreads in complicated wireless channel.

For its robust performance in combating multi-path fading, it is adaptable to use in the wireless mobile communication channel and is widely focused on.

These parameters are difficult to obtain in multipath fading channels.

With this model,the blind multiuser detection and iterative algorithm of MC-CDMA systems based on subspace projection are studied in the multipath fading channel.