Generalized Multicarrier CDMA: Unification and Linear Equalization
نویسندگان
چکیده
منابع مشابه
Generalized Multicarrier CDMA: Unification and Linear Equalization
Relying on block-symbol spreading and judicious design of user codes, this paper builds on the generalized multicarrier (GMC) quasisynchronous CDMA system that is capable of multiuser interference (MUI) elimination and intersymbol interference (ISI) suppression with guaranteed symbol recovery, regardless of the wireless frequency-selective channels. GMC-CDMA affords an alldigital unifying frame...
متن کاملMulticarrier Equalization: Unification and Evaluation. Part I: Optimal Designs
Equalization is crucial in mitigating inter-carrier and inter-symbol interference. To ease equalization in a multicarrier system, a cyclic prefix (CP) is typically inserted between successive symbols. When the channel order exceeds the CP length, equalization can be accomplished via a time-domain equalizer (TEQ), which is a finite impulse response (FIR) filter. The TEQ is placed in cascade with...
متن کاملGeneralized multicarrier DS-CDMA using various chip waveforms
In this contribution the family of generalized multicarrier DS-CDMA (MC DS-CDMA) schemes [1] is investigated, when considering time-domain half-sine and raised-cosine chip waveforms, in addition to the rectangular chip waveform. Our results show that for a given subcarrier spacing the particular choice of the chip waveform has a substantial influence on the system’s performance. However, in the...
متن کاملAMOUR-generalized multicarrier transceivers for blind CDMA regardless of multipath
Suppression of multiuser interference (MUI) and mitigation of multipath effects constitute major challenges in the design of thirdgeneration wireless mobile systems. Most wideband and multicarrier uplink CDMA schemes suppress MUI statistically in the presence of unknown multipath. For fading resistance, they all rely on transmitor receivediversity and multichannel equalization based on bandwidt...
متن کاملPerformance of generalized multicarrier DS-CDMA using various chip waveforms
In this letter, we extend our investigation of generalized multicarrier direct-sequence code-division multiple access by considering two additional types of chip waveforms, namely, the time-domain half-sine and raised-cosine chip waveforms, in addition to the rectangular chip waveform. A range of closed-form equations are provided for quantifying the effect of both the multipath interference an...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: EURASIP Journal on Advances in Signal Processing
سال: 2005
ISSN: 1687-6180
DOI: 10.1155/asp.2005.743