초록 ▼

A generic structure of Hybrid ARQ using Turbo Codes is provided which requires the function of a) channel coding, b) redundancy selection, c) buffering and max-ratio diversity combining, d) channel decoding, e) error detection and f) sending back an acknowledgement to the transmitter. The functions

A generic structure of Hybrid ARQ using Turbo Codes is provided which requires the function of a) channel coding, b) redundancy selection, c) buffering and max-ratio diversity combining, d) channel decoding, e) error detection and f) sending back an acknowledgement to the transmitter. The functions (a) and (b) are performed at the transmitter while functions (c) to (f) are performed at the receiver. The initial code rate can be explicitly communicated to the receiver or blindly detected.

대표청구항 ▼

[ What is claimed is:] [1.]1. A method for transmitting data packets, the method comprising the steps of:receiving an incoming data packet;determining an initial turbo code rate based on a channel condition;turbo encoding the data packet to produce encoded bits comprising a plurality of systematic b

[ What is claimed is:] [1.]1. A method for transmitting data packets, the method comprising the steps of:receiving an incoming data packet;determining an initial turbo code rate based on a channel condition;turbo encoding the data packet to produce encoded bits comprising a plurality of systematic bits and a plurality of parity bits;transmitting a first portion of the encoded bits based on the initial turbo code rate;determining if an acknowledgment has been received for the transmitted first portion; andbased on the acknowledgment and the initial turbo code rate, transmitting a second portion of the encoded bits.