PDSA: Parallel distributed sample acquisition for M-ary DS/CDMA systems

In this letter, we propose a parallel distributed sample acquisition (PDSA) scheme applicable to a direct-sequence code-division multiple-access (DS/C DMA) system employing M-ary signaling for data transmission. While the prim itive distributed sample acquisition scheme can be employed only for the bi nary signaling systems which transmit 1 bit per symbol, the proposed PDSA s cheme extends its applicability to the general signaling systems allowing m ultibit transmission per symbol. The proposed PDSA technique can also be ap plied to fast acquisition of the scrambling code in multicarrier DS/CDMA ce llular systems with a slight modification of the transceiver circuitry.