Frame timing acquisition for direct sequence spread spectrum signals in time division duplex transmission

MORI, Naana; Esmailzadeh, Riaz; Takakusaki, Keiji; Nakagawa, Masao

doi:10.1109/vetec.1993.508815

Cited by 2 publications

(1 citation statement)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The second problem is the degradation of transmission quality caused by intersymbol interference due to frequency-selective fading [1]. As a remedy, the adaptive equalization technique [3], anti-multipath modulation technique [4], diversity technique [5], and spread spectrum communication technique [6] have been investigated. Of these, much research is conducted on the adaptive equalizer, because it requires relatively small size of hardware for realization and has a wide range of application.…”

Section: Introductionmentioning

confidence: 99%

An adaptive equalizer for multiray model in high-speed digital land mobile radio communications

Ogami

Sakaida

Takahata

2000

Electron. Comm. Jpn. Pt. II

View full text Add to dashboard Cite

An effective method of signal processing related to adaptive equalization and frame synchronization is proposed, which provides good characteristics for frequency‐selective fading due to multipath propagation represented by the multiray model in high‐speed digital land mobile communications. This can be realized by adding two types of signal processing to the decision feedback adaptive equalizer based on dual‐mode equalization combined with frame synchronization that establishes frame timing from the arriving wave with the strongest correlation with the equalization training sequence. The principle of the proposed signal processing is based on the formation of a data sequence synchronized hypothetically with the preceding and final delayed waves by means of the time shift and on the selection of the best adaptive equalization result. The bit error rate characteristics obtained by the proposed signal processing method are presented under the condition that 16 QAM is used as the modulation scheme and frequency‐selective fading is characterized by the 3‐ through 6‐ray models delayed at a symbol period interval with D/U = 0 dB, and they are quantitatively evaluated in terms of the frame timing, Eb/N0, and the amount of shift. © 1999 Scripta Technica, Electron Comm Jpn Pt 2, 83(1): 44–51, 2000

show abstract

Section: Introductionmentioning

confidence: 99%