A PROCESS FOR THE PREPARATION OF SURFACE MODIFIELD TIN OXIDE FOR MAKING HYDROCARBON SENSOR

摘要

An apparatus at a transmitter (800) initializes (902) pseudonoizes (PN) sequence generators (302,306,320) to a predetermined initial state and thereafter generates (906) time-synclironixed PN sequences. A spread spectrum signal is then transmitted (908) by utilizing the PN sequences to encode information. At a receiver (600,700) a predetermined one of the PN sequences is acquired and tracked (1002), and the predetermined one of the PN sequences is acquired and tracked (1004). A PN sequence generator (602,714,772,730) of the receiver is adjusted (1006,1014) to generate 8 selected PN sequence time-synchronized with the predetermined one, and a corresponding one of the PN sequences is despread (1008) by utilizing the selected PN sequence to decode the information.