Written by the leading experts in the field, the best selling book on UMTS is now updated to cover 3GPP High Speed Packet Access (HSPA) evolution (HSPA+) in Release 7 and on-going Long Term Evolution (LTE) activity for Release 8. These technologies enhance the capabilities of the existing WCDMA/HSPA networks to offer higher data rates beyond 100 Mbps."WCDMA for UMTS, Fourth Edition" also covers 3GPP WCDMA Release 99, High Speed Downlink Packet Access (HSDPA) in Release 5 and High Speed Uplink Packet Access (HSUPA) in Release 6, which are already deployed commercially. Multimedia Broadcast Multicast System (MBMS) is also described in detail. Key updates include: Continues to provide both updated descriptions of the 3GPP standard as well as the latest end user and system performance estimates; updated HSDPA and HSUPA, including link budgets and Iub dimensioning; detailed MBMS description 3GPP Release 7 HSPA evolution full description 3GPP Release 8; LTE overall description and 3GPP schedule; and dedicated chapter on terminal design challenges for the new high speed radio technologies.