Patent ID: 7477628
Filing Date: 2009-01-13
Classification: H04L

Abstract:
1. A radio communication apparatus based on a hybrid ARQ scheme that retransmits transmission data to a reception apparatus based on a retransmission request from said reception apparatus, comprising: a transmission count estimation section that estimates a transmission count based on a retransmission request from said reception apparatus; a coding rate calculation section that calculates a coding rate based on a set modulation scheme, transmission data and the number of codes; a selection section that selects retransmission parameters based on said set modulation scheme, the estimated transmission count estimated by said transmission count estimation section and coding rate calculated by said coding rate calculation section in such a way that reception power of all retransmission data at said reception apparatus increases; and a coding section that codes said transmission data based on the selected retransmission parameter selected by said selection section and generates retransmission data.