MAP selection-diversity DFE for indoor wireless data communications
نویسندگان
چکیده
Yumin Lee Donald C. Cox Stanford University Stanford, CA 94305-9505 fyuminlee, [email protected] Abstract We propose a novel symbol-by-symbol selection diversity approach with adaptive DFE's. The branch decision with the maximum estimated a posteriori probability of correct is selected as nal and used to adapt the DFE for all branches. Simulations show an improvement of 3.5dB over a previously proposed selection diversity scheme.
منابع مشابه
Multiple Decision Delay DFE for Short-Burst Indoor Wireless Data Communications
A multiple decision delay decision-feedback equalizer (MDDDFE) is proposed for short-burst data communication over frequency-selective Rayleigh-fading indoor wireless channels. Simulation results show that MDDDFE can maintain low average bit error rate without incurring too much computational overhead. In particular, approximately 3dB gain over the conventional single DFE approach is obtainable...
متن کاملAntenna diversity combining and finite-tap decision feedback equalization for high-speed data transmission
The next generation wireless communication systems are expected to support high speed data trans mission However associated with high transmission rates is the problem of multipath inter symbol interference ISI due to frequency selective fading Decision feedback equalization DFE and antenna diversity combining are two practical techniques for combating multipath ISI In this paper we in vestigat...
متن کاملAdaptive DFE with Regularization for Indoor Wireless Data Communications
Recursive least-squares adaptive decision-feedback equalizers (DFE) can be classified into the direct adaptation (DA) and channel-estimation-based adaptation (CEBA) approaches. CEBA provides better performance than DA when the channel length is known exactly. However, for wireless channels, the channel length is a random unknown quantity. In this paper, we evaluate the performance of the DA and...
متن کاملIndoor Non-directed Optical Wireless Communications - Optimization of the Lambertian Order
For an indoor non-directed line of sight optical wireless communication (NLOS-OWC) system we investigate the optimized Lambertian order (OLO) of light-emitting diodes (LEDs). We firstly derive an expression for the OLO from a conventional Lambertian LED model. Then, we analyze the indoor multi-cell NLOS-OWC channel characteristics including the optical power distribution and the multipath time ...
متن کاملPerformance of Adaptive DFE and Antenna Modems for Wireless Personal Communications
| Decision feedback equalization (DFE) and antenna diversity combining are two practical techniques for combating multipath fading. In this paper, we investigate the performance of diversity combining together with DFE under various numbers of antenna branches and equalization taps in a wireless communication environment with AWGN and co-channel interference (CCI). Speciically, we present exten...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- IEEE Journal on Selected Areas in Communications
دوره 16 شماره
صفحات -
تاریخ انتشار 1998