LOW COMPLEXITY DATA DETECTION USING FAST FOURIER TRANSFORM OF CHANNEL CORRELATION MATRIX

摘要

In the time division duplex (TDD) communication system using code division multiple access (CDMA), the combined signal is received in one time slot over a shared spectrum (shared spectrum). Each data signal is also subject to a similar channel response, such a similar channel response is estimated. Based in part on the estimated channel response, and establish a matrix representing a channel of the data signal. The spread data vector is determined based in part on a rotation matrix to a decomposition of the channel matrix, a fast Fourier transform (FFT). Spread data vector is despread to recover data from the received combined signal.