The Englishman is optimistic about his side's chances of reaching the semi-finals and has insisted there is more to the team than just Zlatan Ibrahimovic
The Ligue 1 leaders had to settle for a 2-2 draw in the first leg at the Parc des Princes last week, but Beckham is confident that they can win at Camp Nou on Wednesday in order to book their ticket for the next round.
"We have the abilities and the players to win this game. We showed character in the first leg. It is always a hard battle when you take on Barcelona as they have a lot of possession," the former Manchester United star told BeIn Sport.
"The first-leg draw was not a perfect result, but it was not bad for us. We know what to do in Barcelona. We must score and beat them. It is never easy to play against Barca, but we go there to win the match."
Beckham then went on to underline the importance of Zlatan Ibrahimovic, but stressed that PSG are not a one-man team.
"People expect a lot from Zlatan because of all the goals he scores. He really is a great player and he's been important at every club he played.
"We have other important players, though, who are very talented as well. We really act as a team."
The 37-year-old then acknowledged in an interview with The Times of India that he is unlikely to start every game for PSG, but compared his situation to that of former team-mates Paul Scholes and Ryan Giggs at Manchester United.
"Of course I want to start games but that’s up to the manager. I just look at players like Giggs and Scholesy, playing at Manchester United, still at the highest level. They don’t play every game but when they do play they are big influences in the game, so I’m looking to do that."