TCP Performance over UMTS-HSDPA Systems presents a comprehensive study of the influence of TCP on achieved application bit rate performance and system capacity, and show how to reduce the interaction of wireless networks on TCP with minimal cost. The second part focuses on the interaction of TCP with wireless systems, presenting a complete list of TCP versions and link layer solutions that adapt TCP (often modifying the original TCP) to the wireless network. This section also displays mathematical modeling of the interaction of hybrid automatic repeat request (HARQ) and TCP in UMTS networks. While offering information for advanced students who are unfamiliar with code division multiple access (CDMA) wireless systems as well as UMTS and HSDPA cellular systems, this book also provides extensive coverage of "TCP wireless systems" problems and solutions for researchers, developers, and graduate students.