PSK Digital Modulation DSP Implementation Applied to Software Radio

Demand of future wireless communication services will require an always-on connection according to the quality of service QoS and provider service. This QoS involve multiple wireless standards that require intelligent and dynamic portable device. Wireless modems are key part of mobile devices in adequate transmissions according to QoS. In order to adapt different wireless standard, future radios will need to be implemented on software form, Thanks to DSP and wireless technologies, today software modem radios for 2 and 2.5 Generations have already been implemented. Here, we have analyzed and implemented a phase shift keying (PSK) modem. A key feature of this modem is the design of an integer k-sampling time a table bit rate independent. This feature has allowed reducing the receiver memory and time implementation by reducing the delay and sampling time to the minimum. This provides a bit rate limit only by the analog to digital converter sampling time. The PSK modem has been implemented on a digital signal processor TMS320C5416 platforms, the results obtained were according to simulation and theoretical analysis