TY - JOUR
T1 - Complete RF-system analysis of direct conversion receiver (DCR) for 802.11a WLAN OFDM system
AU - Li, Liang Hui
AU - Lin, Fu Lin
AU - Chuang, Huey Ru
N1 - Funding Information:
Manuscript received September 17, 2004; revised November 24, 2005, June 12, 2006, September 9, 2006, and September 11, 2006. This work was supported by the National Science Council, Taiwan, R.O.C., under Grant NSC 95-2219-E-006-002. The review of this paper was coordinated by Dr. K. Molnar.
PY - 2007/7
Y1 - 2007/7
N2 - This paper presents a detailed analysis of RF system parameters, including phase noise, noise figure, the in-band third-order intercept point (IIP3), the in-band second-order intercept point (IIP2), and the in-phase/quadrature (I/Q) imbalance, of the direct conversion receiver (DCR) for an 802.11a wireless local-area-network (WLAN) orthogonal frequency-division-multiplexing system. A design example of DCR RF parameters planning for a 5-GHz 802.11a WLAN is presented and discussed. It is found that the critical specifications to realize a 5-GHz 802.11a WLAN DCR are the local-oscillator phase noise and I/Q imbalance. However, since there is a 312.5-kHz empty region around zero frequency for the 802.11a standard, dc offset and flicker noise are less sensitive. Hence, the DCR architecture is still an attractive choice for the 802.11a WLAN system. The study can be very useful for RF circuit design in wireless-communication systems.
AB - This paper presents a detailed analysis of RF system parameters, including phase noise, noise figure, the in-band third-order intercept point (IIP3), the in-band second-order intercept point (IIP2), and the in-phase/quadrature (I/Q) imbalance, of the direct conversion receiver (DCR) for an 802.11a wireless local-area-network (WLAN) orthogonal frequency-division-multiplexing system. A design example of DCR RF parameters planning for a 5-GHz 802.11a WLAN is presented and discussed. It is found that the critical specifications to realize a 5-GHz 802.11a WLAN DCR are the local-oscillator phase noise and I/Q imbalance. However, since there is a 312.5-kHz empty region around zero frequency for the 802.11a standard, dc offset and flicker noise are less sensitive. Hence, the DCR architecture is still an attractive choice for the 802.11a WLAN system. The study can be very useful for RF circuit design in wireless-communication systems.
UR - https://www.scopus.com/pages/publications/34547573311
UR - https://www.scopus.com/pages/publications/34547573311#tab=citedBy
U2 - 10.1109/TVT.2007.897254
DO - 10.1109/TVT.2007.897254
M3 - Article
AN - SCOPUS:34547573311
SN - 0018-9545
VL - 56
SP - 1696
EP - 1703
JO - IEEE Transactions on Vehicular Technology
JF - IEEE Transactions on Vehicular Technology
IS - 4 I
ER -