By Erik Dahlman
This very up to date and useful ebook, written by means of engineers operating heavily in 3GPP, provides perception into the most recent applied sciences and criteria followed through 3GPP, with specified causes of the categorical options selected and their implementation in HSPA and LTE.
The key applied sciences awarded contain multi-carrier transmission, complex single-carrier transmission, complex receivers, OFDM, MIMO and adaptive antenna ideas, complicated radio source administration and protocols, and varied radio community architectures. Their position and use within the context of cellular broadband entry quite often is defined. either a high-level assessment and extra special step by step causes of HSPA and LTE implementation are given. an outline of different comparable platforms comparable to TD SCDMA, CDMA2000, and WIMAX is additionally provided.
This is a 'must-have' source for engineers and different pros operating with mobile or instant broadband applied sciences who want to know tips to make the most of the recent know-how to stick sooner than the competition.
The authors of the booklet all paintings at Ericsson study and are deeply curious about 3G improvement and standardisation because the early days of 3G study. they're major specialists within the box and are at the present time nonetheless actively contributing to the standardisation of either HSPA and LTE inside of 3GPP.
* provides the 1st rationalization of the radio entry applied sciences and key overseas criteria for relocating to the following degree of 3G evolution: absolutely operational cellular broadband
* Describes the recent applied sciences chosen by way of the 3GPP to understand excessive velocity Packet entry (HSPA) and long-term Evolution (LTE) for cellular broadband
* offers either higher-level overviews and distinct reasons of HSPA and LTE as laid out in 3GPP
Read or Download 3G Evolution: HSPA and LTE for Mobile Broadband PDF
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Extra resources for 3G Evolution: HSPA and LTE for Mobile Broadband
The philosophy is to take what is good from WCDMA and HSPA, and redo those parts that have to be updated due to the new requirement situation: either there are new requirements such as the spectrum flexibility or there are requirements that no longer are valid such as the support of ISDN services. The technology advancement in the cellular area has, of course, also influenced the design choice of LTE. 2 HSPA evolution drivers and philosophy WCDMA, HSDPA, and soon also HSPA are in commercial operation throughout the world.
This means that the infrastructure for HSPA is already in place with the network node sites, especially the base-station sites with their antenna arrangements and hardware. This equipment is serving millions of terminals with different characteristics and supported 3GPP releases. These terminals need to be supported by the WCDMA operators for many more years. The philosophy of the HSPA Evolution work is to continue to add new and fancier technical features, and at the same time be able to serve the already existing terminals.
For the paired spectrum, the bands for uplink (mobile transmit) and downlink (base-station transmit) are identified for Frequency Division Duplex (FDD) operation. The unpaired bands can for example be used for Time Division Duplex (TDD) operation. Note that the band that is most globally deployed for 3G is still 2 GHz. 3GPP first defined UTRA in Release 99 for the 2 GHz bands, with 2 × 60 MHz for UTRA FDD and 20 + 15 MHz of unpaired spectrum for UTRA TDD. A separate definition was also made for the use of UTRA in the US PCS bands at 1900 MHz.