Improved relay technology on cellular communication
Xin Yang · Jisuanji gongcheng yu sheji · 2010
To reduce the duration of bi-directional transmission and improve the system spectral efficiency,a design method of novel bi-directional transmission scheme based on demodulation-and-forward relaying mode is proposed.Firstly,the procedure of bi-directional transmission scheme is presented and analyzed.The transmission data from base station and user can be reverted by process of two times exclusive or.Hence,the entry point of improve spectral efficiency is found.With the proposed scheme,there is no need for the relay node to decode the transmission data.Moreover,the algorithm models of bi-directional transmitter and receiver are presented.It is shown by the results of the computer simulation that the proposed novel bi-directional scheme has less transmission duration and better spectral efficiency than the conventional scheme.