Smart Phone Index
iPhone Smart Phone
Testing of Many Smart Phones
Verizon and Google Tablet Development
Consumer Cellular fees not as good as they first seem, but not bad
WiFi Phone should be a disruptive technology
Computer history, RISC vs CISC
Compare WiFi Phones and similar approaches
Brief history of telephones:
1876 Alexander Graham Bell invented the telephone. By 2000, the number of copper land lines in the
world grew to 1.2 billion. While impressive, the number of lines since then has gone down as people
swtiched their Internet connections to cable (and other) from telephone wires.
Bottom line is that in 133 years plus, land line phones grew to 1.2 billion whereas cell phones have
grown to 3 billion in about 20 years. Cell phones projected to hit 4 billion by 2012.
Since smart cell phones have WiFi built in, they can Geotag photos and videos. Eventually they will be
able to automatically download your pictures to your PC via WiFi.
All cell phones used to be backwards compatible to 1G. Now 1G is officially dead and no longer
supported. 2G phones use Time Division Multiple Access which is what is used by GSM phones. To
cram more data in the same bandwidth, Irwin Jacobs (Qualcomm QCOM) invented CDMA or Code
Division Multiple Access is explained as follows:
CDMA employs spread-spectrum technology and a special coding scheme (where each transmitter is
assigned a code) to allow multiple users to be multiplexed over the same physical channel. By
contrast, time division multiple access (TDMA) divides access by time, while frequency-division
multiple access (FDMA) divides it by frequency. CDMA is a form of "spread-spectrum" signaling, since
the modulated coded signal has a much higher data bandwidth than the data being communicated.
An analogy to the problem of multiple access is a room (channel) in which people wish to communicate
with each other. To avoid confusion, people could take turns speaking (time division), speak at
different pitches (frequency division), or speak in different languages (code division). CDMA is
analogous to the last example where people speaking the same language can understand each other,
but not other people. Similarly, in radio CDMA, each group of users is given a shared code. Many codes
occupy the same channel, but only users associated with a particular code can understand each other.
2G is TDMA and 3G is CDMA. This implies that one may want to invest in QCOM. In addition, Cisco
(CSCO) is engaged in the communications between cell towers, which, as you may imagine is quite
complex.
In 1999, Qualcomm sold its base station business to Ericsson, and later, sold its cell phone
manufacturing business to Kyocera. The company was now focused on developing and licensing
wireless technologies and selling Application Specific ICs (ASICs) that implement them.
Texas Instruments is focussed on Digital Signal Processors (DSPs) which are used to process the radio
frequency data of cell phones, WiFi and Ethernet. Coding for internet data over cable lines is
accomplished with DSPs, for example.
Knowledge of what TI, CSCO and QCOM do is widespread and maybe fully discounted by their stock
prices at this point. That PALM has made a iPhone clone and will not be sued by Apple for doing so is
not as widely known. It is also not as widely known that PALM is compatible with the 8000
applications available on the iPhone and that it shouldn't take long for these to be available unless
there is a problem organizing the process. In a similar manner, it is only a matter of paperwork and
procedures before Kindle books can be read on a Palm Pre.
Please note that when you communicate 'real time' data such as voice, the requirements are more
strict for 'when' data arrives, but if some data is missing the human brain will often be capable of
'filling-in' the missing information. Communicating a text message is quite different because you
don't want any incorrect or missing data, the arrival of each piece of data is not important as long as it
can be 'reconstructed' to be in the proper sequence and a time delay is not all that bad. In addition, a
text message obviously doesn't require as much bandwidth as voice. Typically this means that voice
requires more bandwidth per bit communicated than text. Robots typically do not need voice except to
communicate with humans and may use the more efficient methods of communications when 'talking'
to each other.
One of the first applications for CDMA is in GPS.
The Qualcomm standard IS-95, marketed as cdmaOne.
The Qualcomm standard IS-2000, known as CDMA2000. This standard is used by several mobile
phone companies, including the Globalstar satellite phone network.
CDMA has been used in the OmniTRACS satellite system for tracking trucks and other transportation
logistics.
iPhone Smart Phone
Testing of Many Smart Phones
Verizon and Google Tablet Development
Consumer Cellular fees not as good as they first seem, but not bad
WiFi Phone should be a disruptive technology
Computer history, RISC vs CISC
Compare WiFi Phones and similar approaches
Brief history of telephones:
1876 Alexander Graham Bell invented the telephone. By 2000, the number of copper land lines in the
world grew to 1.2 billion. While impressive, the number of lines since then has gone down as people
swtiched their Internet connections to cable (and other) from telephone wires.
Bottom line is that in 133 years plus, land line phones grew to 1.2 billion whereas cell phones have
grown to 3 billion in about 20 years. Cell phones projected to hit 4 billion by 2012.
Since smart cell phones have WiFi built in, they can Geotag photos and videos. Eventually they will be
able to automatically download your pictures to your PC via WiFi.
All cell phones used to be backwards compatible to 1G. Now 1G is officially dead and no longer
supported. 2G phones use Time Division Multiple Access which is what is used by GSM phones. To
cram more data in the same bandwidth, Irwin Jacobs (Qualcomm QCOM) invented CDMA or Code
Division Multiple Access is explained as follows:
CDMA employs spread-spectrum technology and a special coding scheme (where each transmitter is
assigned a code) to allow multiple users to be multiplexed over the same physical channel. By
contrast, time division multiple access (TDMA) divides access by time, while frequency-division
multiple access (FDMA) divides it by frequency. CDMA is a form of "spread-spectrum" signaling, since
the modulated coded signal has a much higher data bandwidth than the data being communicated.
An analogy to the problem of multiple access is a room (channel) in which people wish to communicate
with each other. To avoid confusion, people could take turns speaking (time division), speak at
different pitches (frequency division), or speak in different languages (code division). CDMA is
analogous to the last example where people speaking the same language can understand each other,
but not other people. Similarly, in radio CDMA, each group of users is given a shared code. Many codes
occupy the same channel, but only users associated with a particular code can understand each other.
2G is TDMA and 3G is CDMA. This implies that one may want to invest in QCOM. In addition, Cisco
(CSCO) is engaged in the communications between cell towers, which, as you may imagine is quite
complex.
In 1999, Qualcomm sold its base station business to Ericsson, and later, sold its cell phone
manufacturing business to Kyocera. The company was now focused on developing and licensing
wireless technologies and selling Application Specific ICs (ASICs) that implement them.
Texas Instruments is focussed on Digital Signal Processors (DSPs) which are used to process the radio
frequency data of cell phones, WiFi and Ethernet. Coding for internet data over cable lines is
accomplished with DSPs, for example.
Knowledge of what TI, CSCO and QCOM do is widespread and maybe fully discounted by their stock
prices at this point. That PALM has made a iPhone clone and will not be sued by Apple for doing so is
not as widely known. It is also not as widely known that PALM is compatible with the 8000
applications available on the iPhone and that it shouldn't take long for these to be available unless
there is a problem organizing the process. In a similar manner, it is only a matter of paperwork and
procedures before Kindle books can be read on a Palm Pre.
Please note that when you communicate 'real time' data such as voice, the requirements are more
strict for 'when' data arrives, but if some data is missing the human brain will often be capable of
'filling-in' the missing information. Communicating a text message is quite different because you
don't want any incorrect or missing data, the arrival of each piece of data is not important as long as it
can be 'reconstructed' to be in the proper sequence and a time delay is not all that bad. In addition, a
text message obviously doesn't require as much bandwidth as voice. Typically this means that voice
requires more bandwidth per bit communicated than text. Robots typically do not need voice except to
communicate with humans and may use the more efficient methods of communications when 'talking'
to each other.
One of the first applications for CDMA is in GPS.
The Qualcomm standard IS-95, marketed as cdmaOne.
The Qualcomm standard IS-2000, known as CDMA2000. This standard is used by several mobile
phone companies, including the Globalstar satellite phone network.
CDMA has been used in the OmniTRACS satellite system for tracking trucks and other transportation
logistics.
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