Title :
The effects of phase estimation errors on RAKE receiver performance
Author :
Quirk, Kevin J. ; Milstein, Laurence B.
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., San Diego, La Jolla, CA, USA
fDate :
3/1/2002 12:00:00 AM
Abstract :
As larger diversity and coding gains are introduced into spread-spectrum systems to mitigate the effects of multipath fading and thermal noise, system performance is increasingly being limited by channel estimation error. To properly design these systems, performance measures incorporating the effects of estimation errors are needed. A lower bound on the probability of bit error for a RAKE receiver operating with imperfect phase estimates is presented along with a method to obtain a closed-form expression for its evaluation. Further, this lower bound is compared to an upper bound so that an accurate assessment of system performance can be obtained
Keywords :
code division multiple access; diversity reception; error statistics; fading channels; multipath channels; multiuser channels; packet radio networks; phase estimation; radio receivers; spread spectrum communication; thermal noise; Monte Carlo simulation; RAKE receiver performance; bit error probability; channel estimation error; closed-form expression; code division multiple access; coding gain; diversity gain; imperfect phase estimates; lower bound; multipath fading; numerical integration; packet transmission; performance measures; phase estimation errors; spread-spectrum systems; system performance; thermal noise; upper bound; Channel estimation; Closed-form solution; Estimation error; Fading; Multipath channels; Performance gain; Phase estimation; Spread spectrum communication; System performance; Upper bound;
Journal_Title :
Information Theory, IEEE Transactions on
