Efficient adaptive receivers for joint equalization and interference cancellation in multiuser space-time block-coded systems
نویسندگان
چکیده
This paper develops low-complexity adaptive receivers for space-time block-coded (STBC) transmissions over frequency-selective fading channels. The receivers are useful for equalization purposes for single user transmissions and for joint equalization and interference cancellation for multiuser transmissions. The receivers exploit the rich code structure of STBC codes in order to deliver recursive-least-squares (RLS) performance at least-mean-squares (LMS) complexity. Besides reduced complexity, the proposed adaptive receivers also lower system overhead requirements.
منابع مشابه
Adaptive frequency-domain joint equalization and interference cancellation for multi-user space-time block-coded systems
We develop an efficient adaptive receiver for joint equalization and interference cancellation for multi–user space–time block– coded transmissions. The receiver exploits the code structure and allows multiple user transmissions over frequency–selective fading channels with reduced complexity and lower system overhead. The adaptation scheme is based on a recursive least–squares implementation f...
متن کاملAdaptive Joint Interference Cancellation and Space–Time Block Decoding for IEEE 802.11b WLAN Systems
Digital transmission in wireless local area networks (WLANs) according to the IEEE 802.11b standard suffers from fading, intersymbol interference (ISI), and co–channel interference (CCI). In this paper, receivers with joint interference cancellation and time–reversal space–time block decoding (JICSTD) are proposed for an enhanced version of the IEEE 802.11b WLAN standard with space–time coded t...
متن کاملJoint frequency-domain adaptive equalization and interference cancellation for multi-user space-time block-coded systems
We develop an efficient adaptive receiver for joint equalization and interfercnce cancellation for multi-user space-time blockbcoded transmissions. The receiver exploits the rich code suucture and allows multiple user transmissions over frequency-selective fading channels with reduced compleiity and lower system overhead. The adaptation scheme is based on a recursive least-squares implementatio...
متن کاملJoint intersymbol and multiple-access interference suppression algorithms for CDMA systems
Two promising classes of techniques are developed for e cient multiuser detection in codedivision multiple-access (CDMA) communication systems subject to fading due to time-varying multipath propagation. Both are designed to jointly suppress both intersymbol and multipleaccess interference inherent in such systems, and exploit all available time and frequency diversity. The rst is a family of l...
متن کاملEM-based multiuser detection and parallel interference cancellation for space-time block coded WCDMA systems employing 16-QAM over multipath fading channels
We consider the design of iterative multiuser detectors based on the Expectation-Maximization (EM) algorithm and Parallel Interference Cancellation (PIC) for spacetime block coded (STBC) WCDMA employing 16-QAM in multipath fading channels. We show that the EM-based and PIC receivers improve the receiver performance particularly when two receive antennas are employed. We see that EM receiver sho...
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 Trans. Signal Processing
دوره 51 شماره
صفحات -
تاریخ انتشار 2003