Stream processors have been extensively studied in academia by projects such as Stanford Imagine and MIT RAW. They made their commercial debut with the Cell, a broadband processor from IBM that is the computing engine for the Sony PlayStation 3. Research has demonstrated that stream processors can achieve very high levels of energy efficiency and performance on a variety of speech and image processing as well as wireless communication tasks [12,7]. The cellular telephony market has experienced rapid growth around the world and represents a significant opportunity for stream processors because this domain requires very high computation rates to reduce the bit error rate and to support high data rates, full motion video and multimedia applications, and a variety of wireless standards. Simultaneously, they must also be energy efficient and flexible, have a low time to market, and be low cost. The stringent power requirements of mobile wireless systems calls for different patterns of stream processor customization than previously studied for scientific stream processors. The possibility of customizing the instruction set architecture and on-chip interconnect and performing energy-delay trade-offs for wireless optimized stream processors merits further study.