Title :
Error exponents for maximum-likelihood and successive decoders for the Gaussian CDMA channel
Author :
Guess, Tommy ; Varanasi, Mahesh K.
Author_Institution :
Dept. of Electr. Eng., Virginia Univ., Charlottesville, VA, USA
fDate :
7/1/2000 12:00:00 AM
Abstract :
Random-coding error exponents are derived for the Gaussian code-division multiple-access (CDMA) channel for the maximum-likelihood and optimum successive decoders. Error exponents not only specify the capacity region of the channel, which is known, but also give lower bounds on the rate of exponential decay of the average probability of error as a function of the block length of random codes. A comparison of the two decoders in terms of their error exponents is included
Keywords :
Gaussian channels; block codes; channel capacity; channel coding; code division multiple access; error statistics; maximum likelihood decoding; multiuser channels; random codes; Gaussian CDMA channel; Gaussian code-division multiple-access; average probability of error; block length; capacity; error exponents; exponential decay; maximum-likelihood decoders; random codes; random-coding error exponents; successive decoders; Capacity planning; Error analysis; Error probability; Information analysis; Information theory; Maximum likelihood decoding; Multiaccess communication; Pulse modulation; Region 4; Sufficient conditions;
Journal_Title :
Information Theory, IEEE Transactions on
