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Philips and Cingular Wireless Demonstrate Single Antenna Interference Cancellation Technology to Increase GSM Voice Capacity, Improve Voice Quality, and Speed Data Downloads.

Business Editors/High-Tech Writers

SAN JOSE, Calif.--(BUSINESS WIRE)--Nov. 5, 2002

Cingular Wireless Completes Successful Trial Of Philips' New

Interference Cancellation Chips for GSM/GPRS Mobile Handsets

Royal Philips Electronics (NYSE NYSE

See: New York Stock Exchange

See: Amsterdam Exchange
:PHI) and Cingular Wireless today reached an industry first with a successful commercial network field trial of single antenna interference cancellation The introduction to this article provides insufficient context for those unfamiliar with the subject matter.
Please help [ improve the introduction] to meet Wikipedia's layout standards. You can discuss the issue on the talk page.
 (SAIC SAIC - ) chips for next generation GSM/GPRS mobile phones. This new semiconductor technology improves voice quality, decreases download times for data and increases the number of calls supported on the network for greater all-around efficiency. The technology will be part of Philips' cellular semiconductor baseband and system solutions offered to cellular handset manufacturers globally. The Cingular trials were conducted on cellular prototypes from Philips.

Philips' technology enables mobile handsets to remove interference from undesired signals while efficiently focussing on the signals from the most appropriate base station. It provides network operators with shorter download times over GPRS (General Packet Radio Service) The first high-speed digital data service provided by cellular carriers that used the GSM technology. GPRS added a packet-switched channel to GSM, which uses dedicated, circuit-switched channels for voice conversations.  data channels and offers more robust GSM communications, including Adaptive Multi-Rate (AMR (1) (Adaptive Multi-Rate) A variable rate speech codec selected by the 3GPP for the 3G evolution of the GSM cellphone system (WCDMA). Using the Algebraic CELP (ACELP) compression technology, AMR provides toll quality sound at transmission rates from 4.75 to 12. ) speech channels which translate into higher spectral efficiency allowing operators to carry more calls per base station. As a result, network capacity can be increased and service quality improved for cellular subscribers. The first trial of this technology was performed in Georgia, in North America by Cingular Wireless, a leader in mobile voice and data communications.

"The trial showed approximately a 20 percent increase in voice capacity and GPRS throughput, and we expect this to at least double (with likelihood of even more improvement) once we move our networks to fully synchronized," said Dave Williams, vice president strategic technology at Cingular Wireless. "We have been pushing for practical mobile station performance improvements for years, and while others have suggested interference cancellation impractical, requiring two antennas and double the electronics, Philips has stepped up and shown that a high performance low-cost solution is feasible today with a single antenna and a powerful DSP (1) (Digital Signal Processor) A special-purpose CPU used for digital signal processing applications (see definition #2 below). It provides ultra-fast instruction sequences, such as shift and add, and multiply and add, which are commonly used in math-intensive . Combine this with other improvements such as the Adaptive Multi-Rate Vocoder (AMR) we are deploying this year, that is expected to double voice capacity, and EDGE thereafter for double to triple GPRS data rates and you'll see how Cingular and GSM are well positioned for the future."

"Several operators, especially in North America -- where there is a transition to a GSM-based infrastructure -- have shown a great interest in this feature," said Thierry Laurent, executive vice president business unit mobile communications at Philips Semiconductors. "In the future, mobile handset designers and network operators will undoubtedly require technology of this nature to be a standard option from their handset suppliers to ensure that they are delivering a quality service to their customers. We appreciate Cingular Wireless' support in proving the viability of this innovative solution."

This trial has clearly shown the advantages of introducing handsets with SAIC into today's networks. This technology will provide equal benefit to all Gaussian Minimum Shift Keying (GMSK GMSK Gaussian Minimum Shift Keying )-based transmission schemes, as used for voice and GPRS. Additionally, there are good indications that the gains will continue to improve with additional network synchronization. To further the adoption and standardization of this new technology, SAIC will be adopted as a work item in 3GPP GPP Government Performance Project
GPP General Purpose Processor
GPP General Physical Preparedness
GPP Gambian People's Party
GPP Good Pharmacy Practice
GPP Gross Primary Productivity
GPP Green Procurement Program
GPP Generic Packetized Protocol
, an international standards organization See ISO.  developing 3G evolution for GSM and UMTS (Universal Mobile Telecommunications System) The GSM implementation of the 3G wireless phone system. Part of IMT-2000, UMTS provides service in the 2 GHz band and offers global roaming and personalized features. ."

About Cingular Wireless

Cingular Wireless is the second largest wireless carrier in the U.S., and a joint venture between SBC Communications (NYSE:SBC) and BellSouth (NYSE:BLS See Bureau of Labor Statistics. ). As a leader in mobile voice and data communications, Cingular serves more than 22 million voice and data customers across the United States. Cingular provides cellular/PCS service in 43 of the top 50 markets nationwide. Cingular's Mobitex-based wireless packet data service operates throughout the United States, covering more than 93 percent of the urban business population located in 492 Metropolitan Statistical Areas (MSAs) and non-MSAs with a total population of 200 million people. Cingular offers customers advanced technologies in simple, cost-effective ways that permit them to tap the creative potential of wireless through their own self-expression. Details of the company are available at

About Philips

Royal Philips Electronics of the Netherlands is one of the world's biggest electronics companies and Europe's largest, with sales of $28.8 billion (EUR EUR

In currencies, this is the abbreviation for the Euro.

The currency market, also known as the Foreign Exchange market, is the largest financial market in the world, with a daily average volume of over US $1 trillion.
 32.3 billion) in 2001. It is a global leader in color television sets, lighting, electric shavers, medical diagnostic imaging and patient monitoring, and one-chip TV products. Its 184,000 employees in more than 60 countries are active in the areas of lighting, consumer electronics, domestic appliances, components, semiconductors, and medical systems. Philips is quoted on the NYSE (symbol: PHG), London, Frankfurt, Amsterdam and other stock exchanges. News from Philips is located at
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Publication:Business Wire
Geographic Code:1USA
Date:Nov 5, 2002
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