cdma Resources on ZDNet

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ZDNet Dictionary Definition

CDMA: (Code Division Multiple Access) A method for transmitting simultaneous signals over a shared portion of the spectrum. The foremost application of CDMA is the digital cellular phone technology...; Full CDMA Definition >>

ZDNet Resources

Boost Mobile: Editor's note:Because evaluating wireless coverage requires experience with the network in a wide variety of physical locations, CNET does not rate wireless carriers. We can, however, tell you everything you need to know about the major carriers. We invite your feedback and ratings in our user opinions section--the more input...; Tags: Cellular phones, Boost Mobile, iDEN, CDMA; Product reviews 2008-04-21
Virgin Mobile: Editor's note: Because evaluating wireless coverage requires experience with the network in a wide variety of physical locations, CNET does not rate wireless carriers. We can, however, tell you everything you need to know about the major carriers. We invite your feedback and ratings in our user opinions section; the...; Tags: Cellular phones, Wi-Fi, WIRELESS, Virgin Mobile, CDMA, monthly plan; Product reviews 2008-03-22
Sprint and T-Mobile: A disaster in waiting: Sprint and T-Mobile: A disaster in waitingNO MORE MERGERSAs of late, almost every merger in the last 5 years hasn't made sense, nor have many been successful. While on the other hand, we do look at IBM spinning off their PC division and watch them fly with it.Sprint spun...; Tags: Cellular phones, Mergers & Acquisitions, Graham Ruck, Sprint Communications, T-Mobile, CDMA; Discussion threads 2008-03-07
Two photos of unreleased, cdma BlackBerry 8330 here: BB Geeks has managed to obtain access to either a forthcoming CDMA-capable BlackBerry 8330, or to photos of same. We don't know where or when this Curve device will be released, nor the price. But we do know what it...; Tags: CDMA, Photograph, BB Geeks, Cellular Phones, Consumer Electronics, Personal Technology, Russell Shaw; Blog posts 2008-02-11
Modeling TCP in a Multi-Rate Multi-User cdma System: Modern CDMA wireless channels support multiple transmission rates, which can be dynamically assigned to users based on traffic demand. However, in practice, assignment of high rate channels comes with the penalty of increased power as well as smaller orthogonal codes, which constrains their assignment to only a subset of active...; Tags: CDMA, Assignment, Allocation, Modeling, Tcp/Ip, Networking; White papers 2007-12-01

So you can bring a Sprint phone to Verizon, what's the big deal?: So you can bring a Sprint phone to Verizon, what's the big deal?Sprint has a few new phonesVerizon doesn't have the 6800 yet or the Touch though.Alltel and Revol also use CDMAPlus you'll be able to buy a phone directly from other suppliers if you want. This is a...; Tags: Telecom & Utilities, Cellular phones, Development tools, Handhelds, phone, Verizon Communications Inc., CDMA, Sprint Phone, Sprint Communications, big deal; Discussion threads 2007-11-27
Verizon iPhone WILL be here within a year or so: here's why: Verizon iPhone WILL be here within a year or so: here's why"it will tire both Apple and AT&T out" - nahAT&T may get tired out... but Apple have a long history of persisting beyond the point of economic rationality.RE: Verizon iPhone WILL be here within a year or so: here's...; Tags: Cellular phones, Verizon Communications Inc., CDMA, Verizon iPhone, Apple Inc., phone, GSM, AT&T Corp.; Discussion threads 2007-11-27
Verizon iPhone WILL be here within a year or so: here's why: Verizon Wireless has just announced that by the end of next year, it will provide customers the option to use, on its nationwide wireless network, wireless devices, software and applications not offered by the company. "In early 2008, the company will publish the technical...; Tags: Apple iPhone, CDMA, Verizon Communications Inc., Verizon Wireless, Cellular Phones, Wireless, Consumer Electronics, Personal Technology, Russell Shaw; Blog posts 2007-11-27
Joint Uplink and Downlink Capacity Considerations in Admission Control in Multiservice cdma/HSDPA Systems: TCP-based data flows generate packets and ACKs in two directions, be it in the wireline or wireless networks. In the latter case, packets are typically found in the downlink whereas ACKs are in the uplink. Those two links are asymmetric in the case of CDMA-based High Data Rate (HDR)/High-Speed Downlink...; Tags: HSDPA, CDMA, Telecommunications, TCP, Tcp/Ip, Cellular Phones, Telephony, Networking, Consumer Electronics, Personal Technology; White papers 2007-10-25
With WiMax roll-out, the face of wireless is changing: With WiMax roll-out, the face of wireless is changingWiMax HypeAll this is theorically, 40Mbps is a hype, the real speed per user (the bandwith is always split and limited by QoS functions) is about 0.4Mbps to 1Mbps (quality and coverage will decrease dramatically the speed because phisical issues), also the...; Tags: Cellular phones, Wi-Fi, wireless, CDMA, WiMAX, carrier; Discussion threads 2007-09-06
FAQ: The 411 on radio frequency interference: FAQ: The 411 on radio frequency interferenceAll Phones?This happens with all cellphones -- really?? I have 2 Verizon cellphones -- a RAZR and an old LG (remember the one with the green screen?). I use both, one's for work and the other's personal. I have never had either of those...; Tags: Cellular phones, radio frequency, radio, Cingular/ATT GSM, CDMA, phone, Apple iPhone; Discussion threads 2007-07-27
U.S. Cellular: Editor's note: Because evaluating wireless coverage requires experience with the network in a wide variety of physical locations, CNET does not rate wireless carriers. We can, however, tell you everything you need to know about the major carriers. We invite your feedback and ratings in our user opinions section--the more...; Tags: Cellular phones, WIRELESS, Wi-Fi, Handhelds, U.S. Cellular, CDMA; Product reviews 2007-06-06
How cell calls and text messages are intercepted: are you concerned yours might be?: Those are the good intercept guys. But that doesnt represent the entire cell phone intercept universe.The odds are vanishingly small that anyone is actually out there intercepting your text messages. But that doesnt mean it cannot be done.In fact, an article posted last week to the online magazine Slate...; Tags: Cellular phones, telephone, SIM card, CDMA; Blog posts 2007-03-13
Sprint Nextel: Editor's note: Because evaluating wireless coverage requires experience with the network in a wide variety of physical locations, CNET does not rate wireless carriers. We can, however, tell you everything you need to know about the major carriers. We invite your feedback and ratings in our user opinions section. The...; Tags: Cellular phones, Sprint Nextel Corp., Sprint Communications, Nextel Communications Inc., Nextel iDEN, CDMA; Product reviews 2007-02-15
Verizon Wireless: Editor's note: Because evaluating wireless coverage requires experience with the network in a wide variety of physical locations, CNET does not rate wireless carriers. We can, however, tell you everything you need to know about the major carriers. We invite your feedback and ratings in our User opinions section--the more...; Tags: Cellular phones, WIRELESS, Wi-Fi, Verizon Communications Inc., telephone, network, Verizon Wireless, CDMA; Product reviews 2007-02-15
cdma Channel Parameters Maximizing TCP Throughput: A single TCP session traversing a wireless channel is considered in this paper, with a constant SIgnal to Noise Ratio (SINR) at the receiver. The problem of determining the optimal transmission energy per bit is considered, to maximize TCP throughput. Specifically, in the case where direct sequence spread spectrum modulation...; Tags: Throughput, CDMA, TCP, Tcp/Ip, Networking; White papers 2007-01-01
Capacity and QoS for Streaming Video Applications Over TCP in cdma Based Networks: This paper studies the capacity, i.e., the number of customers per cell, and the quality of service for streaming video in the uplink direction of a cellular Code Division Multiple Access (CDMA){based wireless system. The use of TCP is advocated as the transport layer protocol for streaming video in a...; Tags: QoS, CDMA, Network, Streaming Video, TCP, Video, Wireless, Corporate Communications, Web Site Development, Tcp/Ip, Web Technology, Digital Video, Marketing, Internet, Networking, Personal Technology; White papers 2007-01-01
Measured TCP Performance in cdma 1x EV-DO Network: This paper investigates the long-lived TCP bulk throughput over the CDMA 1x EV-DO service that provides high-speed always on" Internet connectivity in a wide-area mobile environment. Although the peak rates of downlink/uplink are specified as 2.4 Mbps/153 Kbps, the user-experienced application-layer throughput has not been much reported and analyzed. In...; Tags: CDMA, EVDO, TCP, Packet Loss, Tcp/Ip, Networking, Cellular Phones, Consumer Electronics, Personal Technology; White papers 2007-01-01
Distributed Uplink Scheduling in cdma Networks: As mobile devices grow more powerful and diverse in the applications they run, it becomes increasingly desirable to give them some independence in scheduling their transmissions. The latest release of the CDMA2000 1xEV-DO system incorporates a number of mechanisms that afford mobile devices some flexibility in making uplink transmission decisions....; Tags: University Of Pennsylvania, CDMA, Mobile Device, Advertising & Promotion, Marketing; White papers 2006-12-13
Palm Treo 650 (Alltel, cdma): The Palm Treo 650 for Alltel offers all the same features as the other carrier variations, including Bluetooth, a speakerphone, Palm OS 5.4, multimedia, and e-mail support. The Palm-based smart phone is available for $249.99 after discounts and rebates. For more information about the smart phone's design and features, please...; Tags: Smart phones, Cellular phones, Handhelds, CDMA, Palm Inc., Palm Treo 650, Palm Treo, Alltel Corp.; Product reviews 2006-11-17