Cooperativerelayhasbeenaninterestingresearchareaforthepastyearsasitpromoteshigherdataratesandrobusttowirelessenvironment.IEEEWorkGroupinitiatedtheuseofrelaystationsintheIEEE802.16estandardanditiscalledIEEE802.16j.Thispaperproposedamulti-hopcooperativerelaysystemwithspace-timecodes