Adaptive antennas for mobile radio systems using time division CDMA and joint detection
نویسندگان
چکیده
منابع مشابه
Smart antennas for combined DOA and joint channel estimation in time-slotted CDMA mobile radio systems with joint detection
In cellular mobile radio systems, the directional inhomogeneity of the mobile radio channel can be exploited by smart antennas to increase the spectral efficiency. In this paper, a novel smart antenna concept applying receiver antenna diversity at the uplink receiver is investigated for a time-slotted code-division multiple-access (CDMA) mobile radio air interface termed time-division CDMA (TD-...
متن کاملReverse Channel Performance Improvements in CDMA Cellular Communication Systems Employing Adaptive Antennas
In this paper, we examine the performance enhancements that can be achieved by employing adaptive antennas in Code Division Multiple Access (CDMA) cellular radio systems. The goal is to determine what improvements are possible using narrowbeam antenna techniques, assuming that adaptive algo. rithms and the associated hardware to implement these systems can be realized. Simulations and analytica...
متن کاملComparative study of joint-detection techniques for TD-CDMA based mobile radio systems
Third-generation mobile radio systems use time division-code division multiple access (TD-CDMA) in their time division duplex (TDD) mode. Due to the time division multiple access (TDMA) component of TD-CDMA, joint (or multi-user) detection techniques can be implemented with a reasonable complexity. Therefore, joint detection will already be implemented in the first phase of the system deploymen...
متن کاملAccurate Techniques to Evaluate Cdma Bit Error Rates in Multipath Channels with Imperfect Power Control
In this paper, a Simplified Expression for the Improved Gaussian Approximation (SEIGA) is presented for accurately evaluating Direct Sequence Code Division Multiple Access (DS-CDMA) bit error rates in multipath channels and systems with imperfect power control. Previous techniques for evaluating bit error rate performance of these systems can lead to overly optimistic results under a variety of...
متن کاملLms and Rls Algorithms for Smart Antennas in a W-cdma Mobile Communication Environment
Wireless mobile communication systems will be more sophisticated and wide spread in future. This growth demands not only for capacity but also high quality of service and better coverage without increase in radio frequency spectrum allocated for mobile applications. Wireless systems used fixed antenna systems in the past, but space division multiple access systems use smart antennas. These smar...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2000