samiramberkar-3gppmodem.blogspot.com
3GPP Modem Simulator: voice-services
http://samiramberkar-3gppmodem.blogspot.com/2012/11/voice-services.html
3gpp modem behaviour to provide appropriate bearer services for Data, Voice, and SMS, Ver 0.5.1. IMS Voice mean Voice (VoIP thru SIP/RTP/RTCP) call provided by IMS infrastructure. CS Voice mean Voice call provided by GSM/UMTS networks. Assumed that UE is capable of using "SMS over IP (IMS)" if it is IMS Voice capable and its voice setting include IMS Voice. 3GPP TS 23.221 "LTE Architectural requirements". 3GPP TS 24.301 "LTE NAS". 3GPP TS 23.272 "CSFB in EPS". 3GPP TS 24.341 "SMS over IP".
samiramberkar-tutorials.blogspot.com
Telecom Tutorials by Samir Amberkar: LTE Index
http://samiramberkar-tutorials.blogspot.com/2011/01/lte-0.html
Telecom Tutorials by Samir Amberkar. Case of frequency correction burst. Requirements and challenges - 1. Requirements and challenges - 2. Requirements and challenges - 3. Requirements and challenges - 4. So we choose . 3G till Rel 6 - HSDPA. 3G till Rel 6 - HSDPA cont. 3G till Rel 6 - HSUPA. 3G till Rel 6 - HSUPA cont. 3G till Rel 6 - Channel mapping diagram. 3G till Rel 6 - Updated L2 stack. 3G till Rel 6 - MBMS. 3G till Rel 6 - MBMS cont. HSPA Evolution - CPC. HSPA Evolution - CPC cont.
samiramberkar-tutorials.blogspot.com
Telecom Tutorials by Samir Amberkar: Word about ATM
http://samiramberkar-tutorials.blogspot.com/2010/05/atm-1.html
Telecom Tutorials by Samir Amberkar. Case of frequency correction burst. Asynchronous Transfer Mode (ATM). UMTS Radio Access Network uses ATM backbone (for carrying both signaling and user data). So let us have quick brush-up on ATM. Frame relay is one such switching technique wherein data is transmitted in terms of variable size frames. ATM has three layers:. ATM Adaptation layer (AAL). Used for real time data requiring constant bit rate. Provides connection oriented mode. Further reading would be: ATM ...
samiramberkar-tutorials.blogspot.com
Telecom Tutorials by Samir Amberkar: WiMAX Index
http://samiramberkar-tutorials.blogspot.com/2010/06/wimax-0.html
Telecom Tutorials by Samir Amberkar. Case of frequency correction burst. Elements of 802.16 - 1. Elements of 802.16 - 2. Elements of 802.16 - 3. Wednesday, June 16, 2010. Let us discuss Telecom. LTE Overview (a presentation).
samiramberkar-tutorials.blogspot.com
Telecom Tutorials by Samir Amberkar: Solving modulation equations
http://samiramberkar-tutorials.blogspot.com/2013/11/gsm-8i.html
Telecom Tutorials by Samir Amberkar. Case of frequency correction burst. Under GSM GMSK modulation]. In this article, we will solve the modulation equations from earlier article. So that we could plot it and get insight into mathematics behind. Let us start with Convolution of Gaussian function h(t). With rectangular pulse of width T. G(t) = h(t) *. Can be written as:. And further be evaluated as. Error function ( erf. Is defined as below:. Erf(ax b) dx =. Ax b) erf(ax b). Next step is Integral:.
samiramberkar-tutorials.blogspot.com
Telecom Tutorials by Samir Amberkar: Data Link layer concepts Index
http://samiramberkar-tutorials.blogspot.com/2010/04/data-link-layer-concepts-0.html
Telecom Tutorials by Samir Amberkar. Case of frequency correction burst. Data Link layer concepts Index. Part 1 - LAPD. Part 2 - LAPD Frames. Thursday, April 15, 2010. Let us discuss Telecom. LTE Overview (a presentation).
samiramberkar-tutorials.blogspot.com
Telecom Tutorials by Samir Amberkar: GMSK modulation
http://samiramberkar-tutorials.blogspot.com/2013/10/gsm-8f.html
Telecom Tutorials by Samir Amberkar. Case of frequency correction burst. In this article, we would illustrate GSM GMSK modulation. Below are the equations specified in 3GPP TS 45.004:2. Differential encoding is used; it means rather than every bit value, difference in consecutive bits is encoded as 1 or -1 ( 1 is when bits are same, -1 otherwise), refer α. Below Along with equations, corresponding waveforms are shown for an example of one differential encoding of " 1". 948;T . √. 044168 with BT=0.3.
samiramberkar-tutorials.blogspot.com
Telecom Tutorials by Samir Amberkar: OSI Index
http://samiramberkar-tutorials.blogspot.com/2010/03/osi-0.html
Telecom Tutorials by Samir Amberkar. Case of frequency correction burst. Tuesday, January 12, 2010. Let us discuss Telecom. LTE Overview (a presentation).