hueber gernot multi mode multi band rf transceivers for wireless communications advanced techniques architectures and trends

Frequency spectrum is a limited and valuable resource for wireless communications. A good example can be observed among network operators in Europe for the prices to pay for UMTS-frequency bands. Therefore, the first goal when designing future wireless communication systems (e.g. 4G – fourth generation) has to be the increase in spectral efficiency. The development in digital communications in the past years has enabled efficient modulation and coding techniques for robust and spectral efficient data, speech, audio and video transmission. These are the multi-carrier modulation (e.g. OFDM) and the spread spectrum technique (e.g. DS-CDMA), where OFDM was chosen for broadcast applications (DVB, DAB) as well as for broadband wireless indoor standards (ETSI HIPERLAN-II, IEEE-802.11) and the DS-CDMA was selected in mobile communications (IS-95, third generation mobile radio systems world wide, UMTS/IMT 2000). Since 1993 various combinations of multi-carrier (MC) modulation and the spread spectrum (SS) technique have been introduced and the field of MC-SS communications has become an independent and important research topic with increasing activities. New application fields have been proposed such as high rate cellular mobile, high rate wireless indoor and LMDS. It has been shown that MC-SS offers the high spectral efficiency, robustness and flexibility that is required for the next generation systems. Meanwhile, different alternative hybrid schemes such as OFDM/OFDMA, MC-TDMA, etc. have been deeply analysed and adopted in different international standards (ETSI-BRAN, IEEE-802 & MMAC). Multi-Carrier & Spread-Spectrum: Analysis of Hybrid Air Interfaces draws together all of the above mentioned hybrid schemes therefore providing a greatly needed resource for system engineers, telecommunication designers and researchers in order to enable them to develop, build and deploy several schemes based on MC-transmission for the next generation systems (which will be an integration of broadband multimedia services covering both 4G mobile and fixed wireless systems). * Offers a complete treatment of multi-carrier, spread-spectrum (SS) and time division multiplexing (TDM) techniques * Provides an in-depth insight into hybrid multiple access techniques based on multi-carrier (MC) transmission * Presents numerous hybrid multiple access and air interface architectures including OFDM/CDMA, MC-CDMA, MC-DS-CDMA and MT-CDMA * Covers new techniques such as space-time coding and software radio Telecommunications engineers, hardware & software system designers and researchers as well as students, lecturers and technicians will all find this an invaluable addition to their bookshelf.



Что искали на сайте
кружка printio пионы | dsquared2 пляжные брюки и шорты | cs 12 24 in s hook s hook not include pot | 110cm wide wedding dress lace embroidery diy women clothes materials clothing fabric accessories ivory white church happy hour | printio soviet tank | faux pearl espadrille flatform sliders | linux® administrator street smarts | best deal quartz watch women fashion tower pattern diamond dial watches men faux leather watch women s dress clock montre relo | 14pcs set stainless steel dumplings wrappers cutter maker tools cake moulds mousse ring round stainless steel cookie molds set | брюки fiorella rubino fiorella rubino fi013ewbeeg7 | cute resin bride and bridegroom toy doll | резиновые сапоги playtoday playtoday mp002xg006pn | autumn summer new women shirt dress long sleeved female dresses slim fashion party office lady sundress plus size casual rob | 350a 500a gas welding gun shunt connecting rod insulation cover bent pipe nozzle gas welding gun accessories welder gun parts | creative fun cheese snacks pu pocketbook coin bag girls purse small canvas purse cat coin purse | len deighton spy line | лампа энергосберегающая tdm sq0323 0054 | motorcycle atv riding scooter driving flying protective frame clear lens portable vintage helmet goggles glasses for 2009 buell xb12r | skeleton skull head silicone chocolate muffin cupcake candy ice cube mold halloween | issey miyake l eau d issey pour homme summer edition eau de toilette | macarons ceiling lamps rose colors metal lamp body acrylic lamp shade colorful post modern ceiling light led lighting fixture | батарейка perfeo алкалиновая pf lr6 4sh | кеды y | deadly animals | the shining |