Synchronous DS/CDMA of recursive oblique projectors using the Gram-Schmidt process
Ryudo Nagase, Kunio Oishi, Toshihiro Furukawa · 2017
This paper presents a recursive oblique projector using the Gram-Schmidt process. The recursive construction of oblique projectors allows a receiver to prevail interference and noise environment in direct-sequence code-division multiple-access (DS/CDMA) system. When the number of the interfering users in the system increases or decreases, the oblique projector is recursively updated by the proposed procedure. Simulation result demonstrates that the proposed procedure is more computationally efficient than the conventionally-implemented construction of oblique projectors without the degradation of bit-error-rate (BER) performance in the DS/CDMA system.