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Cheat Sheet: QR codes
Cheat Sheet QR codes? So combine QR codes with mobile phones and you have the potential for a world with a QR code reader in every pocket. Can I get my phone to scan these QR codes then? QR... [28 May 2008]
Flexible Forward Error Correction Codes With Application to Partial Media Data Recovery
White Paper Conventionally, linear block codes designed for packet erasure correction are targeted to recover all the lost source packets per block, when the fraction of lost data is smaller than the redundancy overhead. [29 Aug 2009]
SMS short codes - a tale of telco chaos
News Naughton told silicon.com that he is currently able to get the same four- or five-digit codes for Vodafone and BT Cellnet's networks, with 80 numbers connected thus far, though billing for BT Cellnet Pay-as-you-go... [12 Apr 2002]
UK phone codes change again
News The codes will provide additional blocks of numbers for fax machines and Internet access. The UK has entered yet another period of telephone number upheaval, as new code changes for six areas came into effect yesterday. [01 Jun 1999]
Galileo codes cracked by Cornell?
News Researchers from Cornell University say they have cracked the codes used by the Galileo global navigation satellite Giove-A. The Cornell researchers claim that breaking the codes, which use pseudorandom... [17 Jul 2006]
Design of IRA Codes for Non-Coherent Detection With OFDM
White Paper Irregular Repeat Accumulate (IRA) codes are a special class Of Low-Density Parity-Check (LDPC) codes which perform very close to capacity for memory-less channels with coherent detection. This paper... [13 Apr 2007]
Method for using Concatenated Convolutional Turbo Codes in IEEE 802.16a
White Paper Turbo codes present a new and very powerful error control technique, which allows communication very close to the channel capacity. Since its discovery in 1993, a lot of research has been done in the application of turbo... [25 Feb 2004]
Constant Weight Codes: A Geometric Approach Based on Dissections
White Paper This paper presents a novel technique for encoding and decoding constant weight binary codes that uses a geometric interpretation of the codebook. Their technique is based on embedding the codebook in a Euclidean space... [30 May 2009]
Multilevel Codes for OFDM-Like Modulation Over Underspread Fading Channels
White Paper The paper uses ideas from generalized concatenation to design multilevel codes for this canonical channel model. These codes are based on partitioning a constellation carved out from the integer lattice. [18 Apr 2007]
Common Short Codes: The Time Is Now for Mobile Marketing and Outreach
White Paper Common Short Codes represent the fastest, surest, and most proven way for brands and organizations of any size to obtain access to today's mobile culture and create a mobile presence. Using CSCs and layering on a mobile... [01 Mar 2009]
Common Short Codes: Cracking the Mobile Marketing Code
White Paper More and more consumers are recognizing and responding to these short codes in television shows, on consumer goods, and in various advertisements. Mobile marketing is one of the fastest growing advertising channels today. [01 Mar 2009]
400 million QR codes coming to Pepsi packs
News Thirsty UK consumers will be able to access games and other entertainment from their mobiles as Pepsi introduces QR codes to its drinks packs. QR or quick response codes - a type of 2D barcode - can be... [06 Nov 2008]
Performance of Multicarrier DS-CDMA Systems Using Chaotic Spreading Codes With Arbitrary Carrier Spacing
White Paper Numerical examples show the superiority of chaotic spreading sequences to i.i.d.codes in terms of the average BEP. The MultiCarrier (MC) Direct-Sequence (DS) Code Division Multiple Access (CDMA) system employing chaotic... [15 Apr 2009]
UK health service gives Read Codes a second chance
News The NHS Executive is rethinking its strategy towards the controversial Read Codes because the UK health service can't cope without them, according to a source close to the situation. The Read Codes were... [06 Oct 1998]
Pyramid Codes: Flexible Schemes to Trade Space for Access Efficiency in Reliable Data Storage System
White Paper Aiming at this goal, two fundamentally different classes of codes are introduced under the same naming umbrella - Pyramid Codes. The basic Pyramid Codes are simply derived from any... [23 May 2007]
