| Currently, Cooperative communication has been a focus worldwide because of its similarcharacteristics with MIMO system. But due to the distribution and mobility of relay nodes andterminals in cooperative networks, cooperative communication is different from MIMO. The timingerrors caused by the propagation delay of different communication link is the most important issueto be solved in cooperative communication. Because there is no perfect solution to the inherentdisadvangtage of OFDM, SC-FDE has been a research emphasis. So this paper propose to utilizeSC-FDE to eliminate the timing errors in cooperative communication. The main content of thispaper are as follows:（1） The paper analyse three different cooperative schemes in cooperative communicationfirstly. Then this paper conducts a contra analysis between Digital Network Code andAnalalog Network Code.（2） This paper briefly analyse different type of timing errors in cooperative communication,and analyse the impact caused by timing errors in detail. Then the paper summarizesdifferent anti timing errors schemes reaearched by other scholars.（3） The paper explain the basic principle of SC-FDE elaborately, make a contrast ofdifferent equalization algorithms. Base on the different cooperative scheme at relaynodes, the paper researchs the different anti timing errors used SC-FDE in one way AFand DF cooperative communication. Then especially in DF mode, the paper utilizesSTBC at relay nodes to achieve high SNR performance as an improvement of the antitiming errors analysed above.（4） The last but not least content of the paper is the anti timing errors transmit scheme intwo-way cooperative communication. On the basis of analysis of one-way SC-FDEtransmit scheme, this paper proposes a SC-FDE transmit scheme combined ANC toeliminate the impact of timing errors and to improve the throughout of the wholenetwork. Then the paper expands two-way scheme to multiple relay nodes, and proposetwo different schemes for multiple relay nodes. |
