1. Title of the project:
Implementation of Turbo Code in TI TMS320C8x

2. Team Members:
Hao Chen

3. Project abstract

The modern wireless communication system has been to a great extent due
to the progress of devices and circuit technology.  The next generation
communication and information services demands for higher data rates and
communication capacity.  The theoretical developments play an important
role in modern communication system.  Shannon established the
fundamental theory about the transmission rates in digital communication
system.  In 1993, Berrou, Glavieux and Thitimajshima proposed Turbo
codes which the practically feasible channel utilization is almost
closed to the theory communication capacity limit.  In this project, I
will implement the Turbo code in TI TMS320C8. 

According to the information theory, the communication channel capacity
is just decided by the channel bandwidth and the noise in the channel. 
The large number of channel code-decode schemes have been introduced to
utilize the communication channel more efficiency.  However, the very
code-decode schemes required too complex decoder algorithms which cause
the code-decode schemes unpractical.  The Turbo code use two levels
coding, an inner and an outer code linked by an interleaver.  The lower
complexity of decoder is gained through two separately decoder compared
with one decoder.  However iterative decoding of Turbo Codes based on
the MAP algorithm still needs large computation.  The TMS320C8x is high
performance DSP with shared memory multiprocessor.  In this project, the
encoder and decoder of Turbo code will be review.  The decoder algorithm
of Turbo Code will be implemented in TMS320C8x.  To utility hardware
resource of TMS320C8x more efficiently, the algorithm will be modified
and mapped into multiprocessor.