TY - JOUR T1 - Isotropic Constant Dimension Subspace Codes TT - JF - IJMSI JO - IJMSI VL - 14 IS - 1 UR - http://ijmsi.ir/article-1-849-en.html Y1 - 2019 SP - 21 EP - 34 KW - Isotropic subspace KW - Constant dimension subspace code KW - Spread Codes. N2 - In network code setting, a constant dimension code is a set of k-dimensional subspaces of F nq . If F_q n is a nondegenerated symlectic vector space with bilinear form f, an isotropic subspace U of F^n_q is a subspace that for all x, y ∈ U, f(x, y) = 0. We introduce isotropic subspace codes simply as a set of isotropic subspaces and show how the isotropic property use in decoding process, then we show that for suitable parameters there are isotropic spread codes. M3 ER -