Spreading the coding spreading tradeoff problem is then studied for a code division multiple access cdma system in which the receiver processes the received signal by using a user separating front end which feeds into autonomous single user decoders under the single user decoding setting it is established that the. Interpretation of this analysis in terms of the coding spreading tradeoff in cdma systems is provided in 3 the authors fix the per user data rate r b bits second and derive a relationship . The coding spreading tradeoff problem is then studied for a code division multiple access cdma system in which the receiver processes the received signal by using a user separating front end which feeds into autonomous single user decoders under the single user decoding setting it is established that the linear minimum mean square error lmmse front end multiuser detector is optimum among all front ends that are constrained to use only spreading information also conditions . Home browse by title periodicals ieee journal on selected areas in communications vol 20 no 2 the coding spreading tradeoff in cdma systems research article the coding spreading tradeoff in cdma systems share on authors v v veeravalli dept of electr comput eng illinois univ urbana il