Robust/lossy discretization in CDMA systems

Robust/lossy discretization (RLD) alleviates the synchronization problem for code-division multiple-access (CDMA) systems at the expense of a small performance penalty. From the received signal, a low-pass filter removes high-frequency components that bear little information about the transmitted data. Discretization is achieved by sampling the resulting signal. To evaluate the performance of RLD, an expression for the sum information rate is derived. RLD is shown to be less sensitive to the spectral properties of the transmitted signal than matched-filter discretization and works well in CDMA systems