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- ...the theoretical foundations of the previous eight books are quite relevant for practice. ...lobal System for Mobile Communications"$)$: Second generation mobile communications system, based on FDMA, TDMA and GMSK. Speech coding.3 KB (464 words) - 13:28, 3 April 2023
- ..."Global System for Mobile Communications" – $\rm GSM$, for short – includes the following subsystems: ...hile the SMSS represents the switching network and the OMSS is responsible for operations and maintenance.4 KB (612 words) - 17:51, 7 January 2023
- ...tion« deals with the essential differences compared to systems for the fixed network, when transmitters and/or receivers are moving.&nbs ...ional impulse response and transfer function, multipath reception in mobile radio, GWSSUS model.4 KB (530 words) - 13:27, 3 April 2023
- ...e error probability'''«, which is the decisive quality feature for digital systems. The description is mainly in baseband, but mos ...ls|"Stochastic Signal Theory"]] $($Books 1 and 3$)$ is assumed for understanding this book.4 KB (527 words) - 11:31, 31 March 2023
- ...ncy_selective_fading| $\text{Rayleigh distribution}$]] describes the mobile communication channel under the assumption that there is no direct path and ...lang, T.: Mobile Communications. Lecture notes. Institute for Communications Engineering. Technical University of Munich, 2008.</ref>:7 KB (1,061 words) - 16:55, 3 February 2023
- ...dization of ${\boldsymbol{\rm xDSL}}$ began, with the "x" as a placeholder for one letter each. A distinction is made between the following system variant The questions for this exercise are limited to basic things such as the question: "Is t7 KB (997 words) - 15:53, 5 March 2023
- |Nächste Seite=Multipath Reception in Mobile Communications}} ...les, a channel property which is also of great importance for mobile communications. As in the entire book, the description is given in the equival10 KB (1,542 words) - 15:41, 29 January 2023
- ...ision Multiple Access"$)$, a specific spreading sequence is provided for each subscriber. Such spreading sequences – and thus also the overa ...Mobile_Communications_Standard|$\rm LTE$]] of the book "Mobile Communications".13 KB (1,929 words) - 17:11, 19 January 2023
- ...ansfer function and the impulse response are time–independent. For all times $t$ applies $H(f, \hspace{0.05cm}t) = H(f)$&nbs ...proportionally with the path length $d_1$ . For example, for the distance $d_1 = 3 \ \rm km$ and the speed of light $c14 KB (2,197 words) - 15:44, 29 January 2023
- |Untermenü=UMTS – Universal Mobile Telecommunications System In order to meet the increasing demand for higher data rates in mobile communications and to ensure ever better quality of service, the UMTS Release 99 standard15 KB (2,250 words) - 19:21, 25 March 2023
- ...gative values and the probability density function $\rm (PDF)$ for $x \ge 0$ has the following shape with the distribution parame ...sp; [[Mobile_Communications/Probability_Density_of_Rayleigh_Fading|"Mobile Communications"]].12 KB (1,790 words) - 11:03, 22 December 2022
- |Untermenü=GSM – Global System for Mobile Communications ... and thus belongs to the second generation $\rm (2G)$ of mobile phone systems.22 KB (3,351 words) - 15:58, 20 February 2023
- |Untermenü=UMTS – Universal Mobile Telecommunications System ...uced, was intended to be a forward-looking alternative to the mobile communications systems used until then. Compared with GSM, UMTS not only offer25 KB (3,834 words) - 15:00, 13 March 2023
- |Untermenü=Mobile Radio Systems of the 2nd and 3rd Generation - an Overview |Nächste Seite=General Information on the LTE Mobile Communications Standard21 KB (3,247 words) - 18:44, 20 February 2023
- ...nt transmission channels, a property that is of great importance for mobile communication. The description is given throughout in the equivalent #the non-frequency selective »Rayleigh fading« for channels without »line of sight« $\rm (LoS)$,25 KB (4,083 words) - 15:23, 29 January 2023
- ...quo;system« can generally be of any kind and is not limited to communications technology alone. In fact, attempts are also made in other fiel ...henomenological systems theories differ significantly from the approach in Communications Engineering, which is outlined in this first main chapter of the pres17 KB (2,685 words) - 18:50, 1 November 2023
- ...;<b>demodulation</b>«, two classical and important methods for Communications Engineering, which already have a very long tradition but are neverth ...troduces the definitions and descriptive variables which are equally valid for all systems. 22 KB (3,220 words) - 15:09, 23 January 2023
- |Vorherige Seite=Spreading Sequences for CDMA ...roperties of PN modulation are now given using the example of the American mobile radio standard [https://en.wikipedia.org/wiki/CdmaOne $\text{IS–95}20 KB (3,049 words) - 18:30, 23 January 2023
- ...e "Lehrstuhl für Nachrichtentechnik" ⇒ "Chair of Communications Engineering". ...Institute for Telecommunications at the Heinrich Hertz Institute in Berlin for two months in 2002.25 KB (3,806 words) - 12:43, 13 January 2022
- ==Motivation of band-pass signals for Communications Engineering== There can be several reasons for this:17 KB (2,652 words) - 16:37, 19 June 2023
- |Untermenü=GSM – Global System for Mobile Communications ...sk of "speech encoding" in GSM is to limit the amount of data for speech signal transmission to $\text{22.8 kbit/s}$ and to repro30 KB (4,749 words) - 16:06, 20 February 2023
- |Vorherige Seite=Multipath Reception in Mobile Communications |Nächste Seite=History and Development of Mobile Communication Systems40 KB (6,350 words) - 18:38, 30 January 2023
- |Untermenü=UMTS – Universal Mobile Telecommunications System ...M is a removable chip card that contains radio information and information for unique identification and authentication of the subscriber. It differ28 KB (4,387 words) - 19:13, 25 March 2023
- |Vorherige Seite=General Information on the LTE Mobile Communications Standard == For speech transmission with LTE ==27 KB (4,221 words) - 15:48, 20 February 2023
- Untermenü=Basic Terms of Communications Engineering *For Mrs. Miller, however, receiving this e–mail only means a17 KB (2,614 words) - 19:56, 6 June 2023
- == Block error probability for RSC and BDD == ...g_Procedure| $\text{Bounded Distance Decoding}$]] $\rm (BDD)$. For "Maximum Likelihood Decoding" the results are slightly better.<17 KB (2,621 words) - 15:51, 13 December 2022
- All communications systems current today $($2017$)$, such as ...bile Telecommunications System" ⇒ 3rd generation mobile communications$)$ and 30 KB (4,517 words) - 16:58, 23 January 2023
- |Untermenü=Mobile Radio Systems of the 2nd and 3rd Generation - an Overview |Vorherige Seite=History and Development of Mobile Communication Systems25 KB (4,044 words) - 16:28, 7 February 2023
- ...re mainly used for »cascaded transmission systems« for the inner block, if the performance of the outer system components&nb ...e »BSC model« ("Binary Symmetric Channel") for the description of statistically independent errors,22 KB (3,417 words) - 14:01, 19 October 2022
- |Untermenü=Binary Block Codes for Channel Coding |Vorherige Seite=Limits for Block Error Probability27 KB (4,255 words) - 12:12, 22 November 2022
- |Untermenü=GSM – Global System for Mobile Communications ...roper operation of the GSM network and the exchange of information between mobile and base station. 33 KB (5,164 words) - 18:48, 20 February 2023
- *But for long codes, "blockwise maximum likelihood decoding" is almost i ...rame|Comparison of "hard decision" and "soft decision"; for all columns of this table it is assumed:<br>'''(1)''' the informatio36 KB (5,613 words) - 18:21, 12 January 2023
- Important evaluation criteria for spreading sequences are the correlation functions. ...e uncorrelated, then $φ_{xy}(τ) \equiv 0$ $($i.e., for all arbitrary values of $τ)$.24 KB (3,708 words) - 18:37, 23 January 2023
- Untermenü=Binary Block Codes for Channel Coding ...ror detection and error correction'''« and provides the basics for describing more effective codes such as37 KB (5,753 words) - 18:26, 18 November 2022
- Throughout the first chapter, the following block diagram is assumed for the digital system as described in [TS87]<ref>Tröndle, K.; Söder, G ...system in that it must also include a '''decision component''' for obtaining the digital sink signal $v(t)$ from the analog receiv28 KB (4,573 words) - 14:51, 31 August 2022
- Throughout the first chapter, the following block diagram is assumed for the digital system as described in [TS87]<ref>Tröndle, K.; Söder, G ...system in that it must also include a '''decision component''' for obtaining the digital sink signal $v(t)$ from the analog receiv28 KB (4,573 words) - 11:30, 12 April 2023
- |Untermenü=UMTS – Universal Mobile Telecommunications System ...Communication_Systems/General_Description_of_GSM|"Global System for Mobile Communications"]] $\rm (GSM)$ of this book, several speech codecs have a40 KB (6,238 words) - 18:15, 20 April 2023
- ...in{array}{l} A \\ 0 \\ \end{array} \right.\quad \begin{array}{*{5}c}{\rm{for} } \\{\rm{ } } \\ \end{array}\begin{array}{*{10}c} ...t $K_{\rm FM}$ into the "frequency deviation" (see below for definition)28 KB (4,482 words) - 16:21, 17 January 2023
- Shannon's Information Theory is applied, for example, in the »'''Source coding'''« of digital (i :*»lossy encoding methods« for analog sources, for example GIF, TIFF, JPEG, PNG, MP3,30 KB (4,551 words) - 17:18, 19 February 2023
