This paper presents essential techniques andparameters required for designing a system thatefficiently transmit multiple hi?fi audio signalsover wireless channel using direct sequencespread spectrum (DSSS) technique. The requirements are to support up to 32 users atcoverage range similar to wireless LAN.
Simulation results show that directly spreadeach user data exhibits the best signal-tointerference ratio (SIR). In addition, the system must incorporate power control, channel coding, as well as limiting the number of active users. As such, the proposed techniques canaccommodate up to 8 users at a chip rate of 4.096Mcps (with processing gain of 32 and channel coding rate 1/2). More users can be supported via frequency division multiplex (FDM) technique.
Keywords: DSSS, hi?fi audio, wireless communication.