Transmission arrangement, particularly for mobile radio

Details Transmission arrangement, particularly for mobile radio Transmission arrangement, particularly for mobile radio

2005-01-28

2008-08-19

Payne, David C. (Department: 2611)

Pulse or digital communications

Transmitters

C375S296000, C455S127100

Reexamination Certificate

active

07415077

ABSTRACT:
The invention specifies a transmission arrangement, particularly for mobile radio, which has a homodyne design and in which a feedback path is routed from the input or from the output of the vector modulator (10, 11, 12, 14) via a switch (20) and an A/D converter (19) back to the digital signal processing (3) in baseband (1). As a result, it is a particularly simple matter to detect offsets and amplitude mismatches and to correct them without difficulty in a digital signal processor (3). This allows both significantly improved carrier frequency suppression and significantly improved sideband suppression to be achieved with little complexity. The mobile radio transmitter described is particularly suitable for use in modern mobile radio systems such as GSM EDGE and UMTS.

REFERENCES:
patent: 3384840 (1968-05-01), Holsinger
patent: 3577009 (1971-05-01), Hofmeister
patent: 4243955 (1981-01-01), Daniel et al.
patent: 5107487 (1992-04-01), Vilmur et al.
patent: 5381108 (1995-01-01), Whitmarsh et al.
patent: 5396196 (1995-03-01), Blodgett
patent: 5574994 (1996-11-01), Huang et al.
patent: 5841322 (1998-11-01), Ivanov et al.
patent: 6373345 (2002-04-01), Kimppa et al.
patent: 7106806 (2006-09-01), Kenington
patent: 2001/0051504 (2001-12-01), Kubo et al.
patent: 2002/0031191 (2002-03-01), Shimizu
patent: 0 265 218 (1988-04-01), None
patent: 0 477 720 (1992-04-01), None
“An Adaptive Digital Technique for Compensating for Analog Quadrature Modulator/ Demodulator Impairments” Anit Lohtia, Paul A. Goud and Colin G. Englefield, IEEE Pac Rim '93, 1993, pp. 447-450.
“A Gain/Phase Imbalance Minimization Technique for Linc Transmitter”, Xuejun Zheng, Peter Nanawa, Lawrence E. Larson and Peter M. Asbeck, IEEE MTT-S International Microwave Symposium Diges, 2001, pp. 801-804.
International Search Report, Int'l Application No. PCT/DE03/02477, Int'l Filing date Jul. 23, 2003, 3 pgs.

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