In this paper, we study trellis properties of the tensor product (product code) of two linear codes, and prove that the tensor product of the lexicographically first bases for two linear codes in minimal span form is exactly the lexicographically first basis for their product code in minimal span form, also the tensor products of characteristic generators of two linear codes are the characteris...

* Faical Akaichi (Corresponding author) CREDA-UPC-IRTA. Parc Mediterrani de la Tecnologia; Av. Canal Olimpic, 15; 08860-Castelldefels. Barcelona Spain. Phone: +34-935521208. Fax 34935521121. Email: [email protected]. José M. Gil. CREDA-UPC-IRTA. Parc Mediterrani de la Tecnologia; Av. Canal Olimpic, 15; 08860-Castelldefels. Barcelona Spain. Phone: +34-935521210. Fax +34-935521121. Email: ch...

In this correspondence, we propose some new designs of 2 2 unitary space-time codes of sizes 6; 32; 48; 64 with best known diversity products (or product distances) by partially using sphere packing theory. In particular, we present an optimal 2 2 unitary space-time code of size 6 in the sense that it reaches the maximal possible diversity product for 22 unitary space-time codes of size 6. The ...

IEEE 802.16 is a standard for Broadband Wireless Access (BWA) air interface. 802.16e supports mobile broadband wireless access, which is an additional feature over its predecessors, which support fixed wireless access. Binary Convolutional Turbo Coding (CTC) is used as mandatory Forward Error Correction method in 802.16e. In this paper the performance of a simple and efficient optional coding s...