Title :
Novel Detection Algorithm of IDMA System under Channel Estimation Error
Author :
Jang, Chulhee ; Choi, Hyunwoo ; Lee, Jae
Author_Institution :
Sch. of Electr. Eng. & INMC, Seoul Nat. Univ., Seoul
Abstract :
In this paper, we propose a novel detection algorithm for the elementary signal estimator of an IDMA system considering channel estimation error. To develop the algorithm, we derive new probability density function of decision variable reflecting channel estimation error and modify the conventional algorithm based on it. Through computer simulations, it is shown that the proposed algorithm achieves lower bit error rate than the conventional one. This performance enhancement is provided with negligible increase of its computational complexity.
Keywords :
channel estimation; code division multiple access; computational complexity; error statistics; signal detection; CDMA system; IDMA system; bit error rate; channel estimation error; code-division multiple access system; computational complexity; detection algorithm; elementary signal estimator; interleave-division multiple access system; probability density function; Bandwidth; Channel estimation; Computer errors; Detection algorithms; Fading; Intersymbol interference; Multiaccess communication; Multiple access interference; Multiuser detection; Probability density function;
Conference_Titel :
Vehicular Technology Conference, 2008. VTC 2008-Fall. IEEE 68th
Conference_Location :
Calgary, BC
Print_ISBN :
978-1-4244-1721-6
Electronic_ISBN :
1090-3038
DOI :
10.1109/VETECF.2008.195
