Is it correct that dynamic panel without individual fixed effect (but with group fixed effects), no serial correlation in error can be estimated consistently through pooled ols?
For example, suppose we have $$ y_{it} = \rho y_{it-1} + \beta x_{it}+v_g+\epsilon_{it} $$ where $E(x_{it}\epsilon_{it})=0$ and $E(y_{it-1}\epsilon_{it})=0$.
Do we need to use Arellano and Bond's GMM method in the above case?