This article proposes and compares the performance of three flexible and bandwidth efficient transceivers. The terminology of Over-Complete Mapping (OCM) is introduced in the first two schemes. All of the schemes. namely Non-Convergent Serial Concatenated OCM Coding (NCSCOC). https://www.roneverhart.com/2-Tier-Cardboard-Cupcake-Stand-with-White-Pink-Sweet-Shop-Design-Colorful-Candy-Themed-Dessert-Cart-Display-for-Pastr/