Evaluation of coded CDMA with interference cancellation
Paper i proceeding, 1999

The performance of an asynchronous CDMA system (up-link) employing very low-rate maximum free distance codes for combined coding and spreading is analyzed when successive or parallel interference cancellation is applied. An analytical approach to the evaluation of the bit error rate is presented and shown to give results close to simulations. Our results show that the code-spread system outperforms the conventionally coded and spread system. Without interference cancellation the single-user bound is never reached (except for one user). With two stages of parallel interference cancellation, a code-spread system with a load only slightly less than 1 bit/chip can obtain a bit error rate very close to that of a single-user system.

rate-compatible

parallel interference cancellation

successive interference cancellation

orthogonal codes

maximum free distance

low-rate convolutional codes

CDMA

Författare

Pål Frenger

Chalmers, Signaler och system, Kommunikationssystem, informationsteori och antenner, Kommunikationssystem

Pål Orten

Chalmers, Signaler och system, Kommunikationssystem, informationsteori och antenner, Kommunikationssystem

Tony Ottosson Gadd

Chalmers, Signaler och system, Kommunikationssystem, informationsteori och antenner, Kommunikationssystem

Proceedings IEEE Vehicular Technology Conference, Houston, Texas

642-647

Ämneskategorier

Data- och informationsvetenskap

DOI

10.1109/VETEC.1999.778231

Mer information

Skapat

2017-10-06