PAPR Advantage of Amplitude Clipped OFDM/TDM
نویسندگان
چکیده
OFDM combined with TDM (OFDM/TDM) can be used to reduce a high peak-to-average power ratio (PAPR) of OFDM, but the PAPR reduction is not sufficient. To further reduce the PAPR, an amplitude clipping can be applied. In this letter, we investigate the effect of clipping on OFDM/TDM with and without channel coding. It is shown that amplitude clipped OFDM/TDM has an advantage over clipped OFDM with respect to the PAPR. key words: OFDM/TDM, clipping, MMSE-FDE
منابع مشابه
Transmission Performance of Clipped and Filtered OFDM/TDM in A Frequency-selective Fading Channel
Abstract: Recently, we proposed OFDM combined with time division multiplexing (OFDM/TDM) to alleviate the high peak-to-average power ratio (PAPR) problem of OFDM. To further reduce the PAPR, amplitude clipping can be used. However, the bit error rate (BER) performance degrades and the out-of-band (OoB) power spectrum grows. Therefore, filtering is necessary to suppress the OoB power growth, but...
متن کاملBER Performance of Clipped and Filtered OFDM/TDM with Pilot-assisted Channel Estimation
Abstract: Orthogonal frequency division multiplexing combined with time division multiplexing (OFDM/TDM) was proposed to overcome the high peak-to-average-power ratio (PAPR) of conventional OFDM. Clipping and filtering can be used to further reduce the PAPR. OFDM/TDM with minimum mean square error (MMSE) frequency-domain equalization (FDE) requires accurate channel estimation (CE). In this pape...
متن کاملPAPR Reduction in MIMO-OFDM System using Clipping Technique
Orthogonal Frequency-Division Multiplexing (OFDM) is a multicarrier transmission scheme. It has various advantages like easy and efficient in dealing with multi-path, robust against narrow-band interference, supports various modulation schemes and perfect for Multiple Input Multiple Output (MIMO) technique. OFDM is combined with MIMO, called MIMO-OFDM. This improves the bandwidth efficiency of ...
متن کاملPAPR reduction in OFDM systems using Customized Convex optimization in Differential Scaling
In this paper, an efficient method for minimizing the high Peak to Average Power Ratio (PAPR), based on Clipping and Differential Scaling, in Orthogonal Frequency Division Multiplexing (OFDM) systems is proposed. In this technique, the amplitude of complex OFDM signal is clipped and then scaled in such a way so that the PAPR is reduced without causing much degradation in Bit Error Rate (BER). C...
متن کاملEffect of High-power Amplifier on OFDM/TDM
Recently, to reduce a high peak-to-average power ratio (PAPR) of OFDM we proposed OFDM combined with time division multiplexing (OFDM/TDM). Using the frequency-domain equalization (FDE), improved BER performance is achieved. Since the OFDM/TDM cannot completely solve the PAPR problem, some amount of input back-off (IBO) from the saturation point of high-power amplifier (HPA) may be required to ...
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:
- IEICE Transactions
دوره 91-B شماره
صفحات -
تاریخ انتشار 2008