The next world anti-doping code, scheduled for 2015, will bid to prevent athletes who have been found guilty of doping from competing at the Olympic Games following the end of their suspension.

The IOC had included a similar ruling in its Olympic charter in 2008.

But the CAS ruled last October that this was an illegal sanction, and the IOC was forced to backtrack and abandon the stipulation before next month’s London Olympics.

The 2015 world anti-doping code will seek to legalise a ban by implementing a “Limitation on Participation in the Olympic Games”, a first draft of the code revealed.

According to the provisional code, “where an athlete or other person has been sanctioned for an anti-doping rule violation... as an additional sanction, the athlete or other person shall be ineligible to participate in the next Summer Olympic Games and the next Winter Olympic Games taking place after the end of the period of ineligibility otherwise im-posed”.

An Olympic ban could also be imposed on athletes deemed to have committed an anti-doping rule violation such as filing failures and missed tests.

The revision of the anti-doping code follows a long period of talks which will likely come to a head at the fourth world conference on doping in sport, scheduled for November 13-15, 2013, in Johannesburg, South Africa.